100 DPS at level 31 is pretty debilitating, but it has been so long since I have been untwinked and low level that I cannot remember if that is normal. My suggestion was going to be work on crane kick, but you seem to have done that.
Do you have fear yet? Fearing one boss while working on the other is a good strat. Also keep your stone fist for when your cobra strike is on CD (which you may not have yet). I definitely remember leveling my first toon and getting my shit kicked in quite a bit.