I'm not a fan of
Flora. I find it too, well, floral. I imagine a little blonde butterball of a girl who is not overly bright, but is happy-go-lucky (never met a
Flora, this is just a mental construct). I would find it rather charming to meet a little girl these days with the name though.
I like
Estella, but I'm not sure whether
Estella Flora flows very well. I think it would be better the other way around, or even as
Flora Estelle.