Wdyt of the name [name_f]Camellia[/name_f]? What kind of vibe do get from it? Iam not a fan of [name_u]Cam[/name_u] as a nn, so I would prefer to use either the full name or the nn of [name_f]Mia[/name_f].
[name_f]TIA[/name_f] 
It’s very pretty and exotic sounding. I like nn [name_f]Mia[/name_f].
For a long time I had [name_f]Camellia[/name_f] on my short list. [name_f]Camellia[/name_f] Nightingale was the name I’d picked. You might like that combo, it sounds like it was “dipt” in a little folly and melancholy. <3
Oh, and obviously I love the name… but I much prefer Lia as the nickname. I also like Cami. Except that I say it with a French accent so that it actually sounds close to the French pronunciation of Camille: cah-MEE
I’m a bit nah about [name_f]Camellia[/name_f] it sort of lost its elegance for me this way unlike [name_f]Camille/name_f or [name_f]Camilla[/name_f] ([name_f]Mia[/name_f]/[name_f]Mila[/name_f]).
I like it! I actually used it as a character name a few years back. I like that it’s a flower name that doesn’t sound over the top frilly or strange as a baby name.
If I had to choose between the nicknames you picked out, I’d choose [name_u]Cam[/name_u], but I like that it’s a name that has a lot of nn potential to suit many different personalities. [name_f]Cami[/name_f] is a good suggestion!
I prefer [name_f]Camille[/name_f]