Main:
Purple: Broly, Goku or SSJ3 Goku
Red: Gogeta, God Goku or Fury Broly (pref. Gogeta)
Blue: Kaioken Goku, SSJ Bardock or SSJ Goku
Green: Vegeta
Bench (Just for the Z-Ability):
Raditz, Red SSJ Goku and EX Blue Goku
(EX are better for bench since you can get them 5-7 stars easier than a SP.
Good luck