why not 6 whm 2 tank pts?
6 Regens on tank
6x 300hp=1800 per 2.5sec + eye for an eye and virus rotation for boss dmg reduction.
The hps would be equivilant 1 whm spamming cure2 + half potency cure. The potency would double if regens were placed on both tanks.
Cleric stance dps from 6 whms who can afford do so more because of the passive healing done by regen
6 cleric stance whm with decent gear should be doing enough dps.
Take 1 whm out for brd or smn if they struggle for mp song,debuffs or aoe limit but don't think they would just regen+stone2 spam with occasional heal.
hmm imagine 7 whm +1 tank pt for titan ..