Also, for my second go, I am thinking of having this:

2 Samurai (Ramza/Generic)
1 Ninja
1 Mediator
1 Summoner/Time Mage

Is this alright? Or should I make it a Summoner/Black Mage instead of a Summoner/Time Mage? I actually think its the time mage that I should use because I already have offensive spells with the summoner.