Oh ok ya I read the pit is also ilvl85. I'll have to see what I can run then cause I dont think my blizzard sorc can solo chaos or wsk atm
Chaos is pretty doable with a very low budget blizz sorc. You just need an act 2 merc (might aura) with a high damage weapon to deal with mages, that are cold inmunes. For example reapers toll, much better if it's eth or an eth elite insight. Make him wear a helm with life leech, vampire gaze, tal rasha mask, ...