Well I haven't had a chance to play Final Fantasy III and I didn't like V so.. I guess I'll just put what I like to have in a party in XI since it's the only other FF game with a Job system that I can really think of at the moment that I have played a lot...
Dragoon
Paladin
Thief
Samurai
Bard
Summoner (or White Mage)
I'll go ahead and throw in my parties for VI and VII for the hell of it even though they don't have a job system...
Final Fantasy VI
Terra
Celes
Cyan (or Edgar)
Mog
Final Fantasy VII
Cloud (as if you have a choice lol....)
Barret
Cid