I think it depends heavily how you want to level and what multibox style you like more, ranged casting or melee.
Both have their advantages.

If you are new to multiboxing, then I don't recommend melee multiboxing.
Ranged is easier to play, but you have downtime to drink. (If you play longer sessions, try to get water from a mage).

Melee have the advantage that you have zero downtime, only healer mana stops you.
With lev 37 you can wear Ravager and enchant it with crusader / fiery weapon if its not your first team or you can loan some gold.