I use Fi/Fo because I love being able to spam infinite health while in the middle of the fray. I actually haven' t used any Force class skillpoints yet, leaning towards PP revival though for the GunSlash Aimshot charged skill.
Seeing as keeping a physical attacker as a subclass wouldn't benefit a force too much(unless you have multicalss weapons), look over all the class skills each sub class has, then decide.