I like
Allegra. I probably wouldn't use it though because I know too many Allegras. But it's a great middle name!
Of your combos I prefer
Eve Allegra, since I dislike
Gwen and
Jane. I do like
Rose, but only as a middle name, I guess.
How about those?
Carlotta AllegraCarolina AllegraCecilia AllegraCelia AllegraClarissa AllegraDelia AllegraFabia AllegraFina AllegraFlora AllegraIsabella AllegraJolanda AllegraMariella AllegraMarta AllegraRubina AllegraSimona Allegra