Kaia is cute, but I prefer
Kira and
Kara.
1)
Kaia 2)
Kaia3) I pronounce it KY-ah. I don't like any other pronunciation.
4) I think many people will think of
Maya when they see Kaya, so I don't think the KAY-uh pronunciation really works. Of course, that could just be my dislike of KAY-uh talking...