Actually enrage is totally doable with 2 healers if paralysis is silenced properly and there is one bard in party.... Forget that 2 healers in enrage is only for elite players with full 90s - it is a smth players with lower average ilvl came up by themselves....
We are usually going with a more/less static group - 2 pld, 1 brd, 1 smn, 1 blm, 1 drg, 1 whm, 1 sch. Before T2 1 pld switches to mnk (not 100% needed, but ADS goes down faster - helps if healers are not that well geared)....
Have seen groups wiping even with 3 healers - 3rd healer should be like a safety vest if smb messes up and gets paralysis on all group not to make him spam aoe heals all the time and then all 3 healers are out of mana (should only happen in not so well geared party with 2 healers who are trying a bit hard)...