I used to dislike
Eliza, but it's grown on me. I think it has a lot of spunk, and goes well with
Gemma Rose.
My next pick is
Gianna Mae (I disagree that they're too close for sisters-- unless you're pronouncing
Gianna Zhoh-nuh, where I could see the confusion might come in. But I pronounce it Gee-on-nuh, as I think most of the general public will, at least in the states).
Zara Mae isn't bad, though. Just not a favorite.