Ume -- Peach is a normal Peach so it'll be great
She does have funny weapons in Mario RPG that could be added for fun...
shrines.rpgclassics.com/snes/smrpg/weapons.shtml (won't let me open it at work but Im sure that is the list)
Cyber -- omg a gijinka Bowser would be adorable! I love gijinka Bowsers