[name_m]Hi[/name_m] berries!
I am only young and don’t plan on having kids any time soon but I would love to know what you think of the sibling set:
[name_f]Summer[/name_f] [name_f]Kate[/name_f]
[name_f]Mia[/name_f] [name_f]Josephine[/name_f]
[name_m]Will[/name_m] [name_m]Timothy[/name_m]
[name_m]Luke[/name_m] [name_m]Richard[/name_m]
All of the middles are honours, but I would love to know what you think, what other names you would suggest and what middles you would give them!
TIA!
[name_f]Summer[/name_f], [name_f]Mia[/name_f], [name_m]Will[/name_m] and [name_m]Luke[/name_m] sound like such a happy band of siblings! I think all of the middles you have paired flow really nicely with the firsts. [name_f]My[/name_f] favourites are [name_f]Summer[/name_f] [name_f]Kate[/name_f] (so bright) and [name_m]Will[/name_m] [name_m]Timothy[/name_m].
I think [name_f]Summer[/name_f] [name_f]Kate[/name_f] is gorgeous such a lovely name really bright, sunny and sweet. [name_f]Mia[/name_f] [name_f]Josephine[/name_f] is also very sweet she has a pretty ballet core aesthetic attached. [name_m]Will[/name_m] [name_m]Timothy[/name_m] is very handsome with a classic feel but I think with the girls I would switch [name_m]Will[/name_m] up to either [name_m]William[/name_m], [name_m]Willis[/name_m] or [name_m]Wilson[/name_m]. [name_m]Luke[/name_m] [name_m]Richard[/name_m] has a 90s boy next door feel very classic works well with [name_m]Will[/name_m] [name_m]Timothy[/name_m] but feels a little out of place with the girls so I think I would go [name_m]Luca[/name_m] [name_m]Richard[/name_m].
Such a lively, carefree set of siblings! I like them.
I’d suggest…
[name_f]Holly[/name_f] [name_f]Anne[/name_f]
[name_f]Willow[/name_f] [name_f]Jane[/name_f]
[name_f]Jasmine[/name_f] [name_f]Claire[/name_f]
[name_f]Jade[/name_f] [name_f]Margaret[/name_f]
[name_f]Hope[/name_f] [name_f]Elizabeth[/name_f]
[name_f]Chloe[/name_f] [name_f]Eleanor[/name_f]
[name_f]Lily[/name_f] [name_f]Charlotte[/name_f]
[name_f]Grace[/name_f] [name_f]Caroline[/name_f]
[name_f]Zoe[/name_f] [name_f]Grace[/name_f]
[name_f]Lola[/name_f] [name_f]Florence[/name_f]
[name_f]Olivia[/name_f] [name_f]Juliet[/name_f]
[name_m]Charlie[/name_m] [name_m]Stephen[/name_m]
[name_m]Jacob[/name_m] / [name_m]Jake[/name_m] [name_m]Matthew[/name_m]
[name_m]Ryan[/name_m] [name_m]Patrick[/name_m]
[name_m]Seth[/name_m] [name_m]Nicholas[/name_m]
[name_m]Freddie[/name_m] [name_m]Thomas[/name_m]
[name_m]Jay[/name_m] [name_m]Christopher[/name_m]
[name_m]Ian[/name_m] [name_m]Paul[/name_m]
[name_m]Trevor[/name_m] [name_m]Andrew[/name_m]
[name_m]Nathan[/name_m] / [name_m]Nate[/name_m] [name_m]Edward[/name_m]
[name_m]Noah[/name_m] [name_m]Philip[/name_m]
[name_m]Benjamin[/name_m] / [name_m]Ben[/name_m] [name_m]Michael[/name_m]
[name_m]Caleb[/name_m] / [name_m]Cal[/name_m] [name_m]Anthony[/name_m]
[name_m]Owen[/name_m] [name_m]Peter[/name_m]
[name_m]Adam[/name_m] [name_m]Charles[/name_m]
[name_m]Ethan[/name_m] [name_m]David[/name_m]
[name_m]Jack[/name_m] [name_m]Gregory[/name_m]
Ooh, I like them!
[name_f]My[/name_f] thoughts-
[name_f]Summer[/name_f] Kate-I adore [name_f]Summer[/name_f]. I love the season, so the whole imagery & vibe makes me so happy. It’s soft but also bright & sunny. Simple & well known but not over done. [name_f]Kate[/name_f] is a little filler middle name-y, but totally go for it if it’s an honor name. The combo flows beautifully.
[name_f]Mia[/name_f] Josephine-How lucky that you have the honor name of [name_f]Josephine[/name_f] to work with. So classy! And I adore [name_f]Mia[/name_f]. I had a little kitty named [name_f]Amelia[/name_f] nn [name_f]Mia[/name_f], so I’m a little biased. I like just [name_f]Mia[/name_f] on its own too. It’s tiny yet punchy & feminine without being frilly. It is pretty popular, which is the only downside.
[name_m]Will[/name_m] Timothy-This is the only one that I’m not that excited about. I like the middle name [name_m]Timothy[/name_m] & this combo flows nicely. I’m just not a fan of [name_m]Will[/name_m] & definitely not just [name_m]Will[/name_m]. I really like [name_m]William[/name_m] on its own.
[name_m]Luke[/name_m] Richard-Well, I don’t care for [name_m]Richard[/name_m], but if it’s a family name it’s totally fine. I’d go for it. I love [name_m]Luke[/name_m]. So sweet & cowboy-y.
[name_f]Hope[/name_f] this helps. 
Your options are really nice. Individually, all the names are lovely and flow well. Mia Josephine, Will Timothy and Luke Richard are perfectly matched in my opinion. I like that all three have a nickname first name and an old-fashioned, honor middle name. Summer Kate is beautiful, but it stands out a little bit. Of course, children’s names don’t have to match or they don’t need to have the same style/theme. However, taking in consideration the other options, I would consider a longer form of Kate and perhaps a different first name.
What about:
Summer Kate nn Sun / Sunny
Sunny Katherine
Sophie Katrina
Sylvie Katharina
First name ideas: Tessa, Posy, Rosie, Anya, Dora, Greta, Poppy, Bea, Daisy, Pippa, Belle, Tilda, Nora
If you absolutely love the four names on your list, please ignore me and save them! They’re beautiful.
[name_f]Summer[/name_f] [name_f]Kate[/name_f] is bright, sweet and warm
[name_f]Mia[/name_f] [name_f]Josephine[/name_f] has sweetness and charm
[name_m]Will[/name_m] [name_m]Timothy[/name_m] is solid, classic with a hint of cool.
[name_m]Luke[/name_m] [name_m]Richard[/name_m] is another classic feeling name, but with a bit of kick and gentleness
[name_f]Summer[/name_f], [name_f]Mia[/name_f], [name_m]Will[/name_m], [name_m]Luke[/name_m] and…
[name_f]Daisy[/name_f] [name_f]Harriet[/name_f]
[name_m]Caleb[/name_m] [name_m]George[/name_m]
[name_f]Florence[/name_f] [name_f]Amy[/name_f]
[name_m]Arthur[/name_m] [name_m]Elliott[/name_m]
[name_f]Ruby[/name_f] [name_f]Jane[/name_f]
[name_m]Finn[/name_m] [name_m]Samuel[/name_m]
[name_f]Rose[/name_f] [name_f]Eleanor[/name_f]
[name_m]Declan[/name_m] [name_m]Jude[/name_m]
Great names! And they all go so well together. The set all together gives me very cheerful summertime vibes, roller skating to the park, sitting on top of the jungle gym blowing bubbles, ice cream trucks, etc.
If I were to give them different middles I might go for:
[name_f]Summer[/name_f] [name_f]Lucy[/name_f]
[name_f]Mia[/name_f] [name_f]Juliet[/name_f]
[name_m]Will[/name_m] [name_m]Carter[/name_m]
[name_m]Luke[/name_m] [name_m]Adam[/name_m]
And if I were to add a sibling maybe:
[name_m]Adam[/name_m]
[name_m]Jason[/name_m]
[name_m]Ryan[/name_m]
[name_m]Benjamin[/name_m]
[name_m]Gabriel[/name_m]
[name_f]Juliet[/name_f]
[name_f]Amy[/name_f]
[name_f]Holly[/name_f]
[name_f]Piper[/name_f]
[name_f]Emily[/name_f]
I really like this set! they feel very bright and modern while still being classic - if that makes sense!
Summer Kate - I love this bubbly combo! Summer is so bright and even though Kate is a bit of a filler, I love that it is an honour name! 
Mia Josephine - Mia Josephine is so elegant! They are both such gorgeous names 
. Mia is a little bit popular but it is the sweetest and most zippy name. 
Will Timothy - I really like the name Will, and Timothy is very handsome with it! I would suggest maybe using William, Willis, Wills or another version to get the nickname Will. Other than that is is very nice! 
Luke Richard - Luke is very handsome and I can completely see a Luke with siblings Summer, Mia and Will. However, if you did end up using William, then I would use Lucas or Luca with the nickname Luke. I can see Luke and Will as siblings, but not a Luke and William, but then I can see a Lucas/Luca and William as brothers! 
As for siblings:
Zoe
Izzy
Piper
Pippa / Pip
Georgia
Abbey
Matilda
Tilly
Claudia
Cleo
Jake
Charlie
Max
Felix
Finn
Archie
Overall they are such a bright, summery and darling set! 
Thank you for all the replies! I love all of these names and suggestions. These are all really helpful and thoughtful! Thank you @EdgeOfTheMeadow @VEL @MichelleM @Estrela @Greyblue @sammaegre @tori101 @oakbelle - thank you @oakbelle for the consideration of siblings they are really helpful!
Thanks guys! 