Input Wanted -- Creating a Heroic Team

[Mercurio]

I have Pally, Priest, 2 x firemage, firelock setup. I AOE through heroic ramp, botanica, UB, SL and for MT i havent managed to AOE there yet (normal is fine)

I'm quite familiar with firemages, but a firelock? Some kind of Destruction spec, I assume? Would be nice to see a toon name to check out the exact spend of talent points. And for lock AoE do you SoC or Hellfire or Rain of Fire?

I'm considering a similiar setup, so any info would be appreciated