In any tactical rpg the most important thing is to have a hard hitting party. To help get you started I have a few classes listed for each race.

Humans

Soldier- initial job class
Paladin- soldier attack ability x2
Fighter- soldier attack ability x2
Thief- initial job class
Ninja- Thief Attack ability x2
White Mage- initial job class
Black mage- initial job class
Archers- Initial job class
Hunter- Archer attack ability x2