It depends of what you want to do.
If you go for crone rolling, then you'll need one or two templars to defeat boss dungeon until you get enough crones to get those chimera accessories.
If you chose to farm twins, then you don't necessarily need to go until stage10, hence you don't need a templar. Best option would be an int wiz with that setup : chimera armor int/psy + chimera staff 100 int / 100psy / 35% atk force / DD / hp abs.
Int wiz + chimera is the best setup considering glacials are nerfed and considering it would be the most efficient aoe class (str savages aren't that good in inter elemental dungeon)