Last run through I had Ramza as a Squire with Math Skills secondary, Auto-Potion (although Blade Grasp might be better in this case), Two-Swords, and Move+3, he was quite effective.

With the Math Skills, if you want to have a good calculator I'd make the main job Summoner and have it be a high Faith character, you'll get good results and have a magic powerhouse. Give them Equip Armor if you're looking for more durability.