[name_f]Lucia[/name_f] [name_u]Cassidy[/name_u] is my favourite from your list, I’d love [name_f]Lilah[/name_f] [name_u]Cassidy[/name_u] if that’s an option
Wow! [name_f]Sienna[/name_f] [name_f]Holly[/name_f] is my favourite combo for a girl! Good taste
I think [name_u]Cassidy[/name_u] [name_f]Lilah[/name_f] is gorgeous. [name_u]Cassidy[/name_u] is also one of my favourite names (and was my very favourite at one point) and goes lovely with [name_f]Sienna[/name_f] and Ezeriah.
[name_f]Lucia[/name_f] [name_u]Cassidy[/name_u] is gorgeous too but I think personally I prefer [name_u]Cassidy[/name_u] as a first name.
I think [name_f]Cassia[/name_f] is beautiful but due to knowing someone called [name_f]Millie[/name_f] who I really disliked I can’t get over that name.
I do like [name_f]Acacia[/name_f], but personally I wouldn’t use it as a first name and I don’t really think it sits that well with [name_u]Cassidy[/name_u].
My favourite is [name_f]Cassia[/name_f] [name_f]Milly[/name_f] as I love the name [name_f]Cassia[/name_f] so much!! [name_f]Milly[/name_f] eats into the British naming trend of nicknames as full names she fits right in with [name_f]Evie[/name_f], [name_u]Alfie[/name_u], [name_m]Archie[/name_m], [name_f]Ellie[/name_f] etc. I am not a hundred percent sure as to whether [name_f]Milly[/name_f] works with [name_f]Cassia[/name_f] feeling that maybe [name_f]Cassia[/name_f] needs a more grown up sophisticated middle name like [name_f]Milena[/name_f], [name_f]Millicent[/name_f], [name_f]Amelie[/name_f], [name_f]Amelia[/name_f], [name_f]Melisande[/name_f] something along those lines would be good. However [name_f]Milly[/name_f] is a sweet name and does add a playful edge to the majestic [name_f]Cassia[/name_f].
Regarding the other choices I think [name_u]Cassidy[/name_u] [name_f]Lilah[/name_f] has a strange flow, I think [name_f]Lila[/name_f] [name_u]Cassidy[/name_u] sounds better. I also prefer the spelling [name_f]Lila[/name_f], I don’t see the need for the extra letters. Concerning [name_f]Lucia[/name_f] [name_u]Cassidy[/name_u] I only like the name [name_f]Lucia[/name_f] pronounced either LOOSHA (like St.[name_f]Lucia[/name_f], Caribbean) or the Italian pronunciation of Loo CHEE ah, I dislike the ‘[name_f]Lucy[/name_f]’ pronunciation. If your [name_f]Lucia[/name_f] is pronounced with the first two pronunciation than it’s a lovely choice and sounds really pretty with [name_u]Cassidy[/name_u]. [name_f]Acacia[/name_f] is an exotic flower name and she’s pretty however I dislike how she works with [name_u]Cassidy[/name_u], I think the name sounds strange teamed together.
Out of your options I think [name_f]Lucia[/name_f] [name_u]Cassidy[/name_u] hasthe best flow, but would also love to see [name_f]Lilah[/name_f] [name_u]Cassidy[/name_u] as an option… or even [name_f]Delilah[/name_f] if that was a possibility?