My fave is Ramza:
Squire:
Guts: Mandatory, but like the Scream and Ultima.
Math Skill: Flare and Holy, how can I lose?
MP Switch: High brave, how can I lose HP?
Magic Attack UP: Holy and Flare kill more.
Move MP UP: This goes with MP Switch.

Excalibur: Holy, anyone?
Any shield: Strongest will do.
Suit w/ +1 Magic Attack: I forget, but I like the bonus.
Hat w/ +2 Magic Attack: Same as Suit.
Magic Gauntlets: +2 Magic Attack.

Most of my equipment is based on increasing my attack magic and with a few Screams, I could do 999 w/ Holy.

I mainly play w/ my opponents by using Time Magic and Yin Yang Magic until I'm bored.