I'm guessing this is a non-issue since it was posted a year ago but here goes...
This would be relatively easy to do with a StamSorc now with the advent of Relequen.
AY or Briarheart or maybe Veiled frontbar, Relequen body, Monster Set (probably Stormfist or Veledrith)
Rending Slashes, Hurricane, Rearming Trap, Crit Surge, Bound Armaments, and either Dawnbreaker or Atro for Ultimate.
Food and pots don't really matter from a sustain standpoint, so I'd probably use blue. Crit pots might be nice, but I'm honestly not sure how much of a boost it would give. Could probably get away with not using them.
Keep all the dots/buffs up (basically the first four skills), spam light attacks. Should pull ~20k.