Have you considered using a Shaman as a healer, then?

If you're really OK with no TT's, then I'd suggest a full priest group. That's what I'd be rolling I wasn't concerned about fear. 4Priests+Mage or simply 5Priests. Some people might say a Warlock over a Mage as the 5th, but I personally think Mage sync's much better.

Priests at least have FearWard. And an impressive amount of DoT's, instant party heals, single burst and a ranged AoE.