I've already made up my mind about 3 of my party members and are going to list their full details below.
Would need some help with figuring out the other 3 though.
Greninja
Role: Special sweeper
Ability: Protean
Ev:252 Speed
252 Sp.Atk
4 Hp
IV:Maximum Speed and Sp.Atk
Nature: Modest
Item: Life...