So i have a 3 box i started to work on. They're in the high 80s, heroic toons, sk/enc/mage but i'm having a LOT of downtime. Mage and SK go through mana super quick atm, was just wondering if i need to maybe add another toon to this mix to help out. Currently i'm running 2 caster dps mercs and 1 cleric merc with this setup.