Ozma is too Wizard of
Oz for me plus I don't really care for the sound. As for
Sunny, it's nms, but I really dislike the Sunni spelling unless it's a nickname for
Sunniva. How about
Rosaline nn
Oz? I have heard the name pronounced with the "oz" sound before. I also knew a woman named
Roswell who went by
Roz (rhyming with
Oz).
Roswell is too masculine for my liking, but I just thought that I'd throw it out there as an example.