Id recomend changing your spec to a more traditional spec.
Missing out on Deep wounds is a fairly big DPS loss and Thus TPS.
Dont forget shouts, even demo shout will cause some amount of threat.
Change glyph of shockwave for Devestate and have fun.
Maybe change your meta gem to 32 sta and 2% more armor.
Change 10 stats to 275 health too perhaps.