Well I beat my old game with a sad party of a Ninja, Hunter, Alchemist, summoner, gunner and dragoon. But the thing was I never learned great class combos(like sumemr/red amge) and such. I restarted my game and have the regular starting part of

humans-2
bangaa-1
Nu mou-1
Moogle-1
Veina-1

what should i level these characters up to be and what are soem good abilities for them to use

please help