i would say get rid of efficiency and put it into improved aspect of the hawk for the simple fact of hunters can regenerate mana quickly and it is rare that u run out of mana as a hunter becuase it is very easy to control.
take out improves wing clip and put it on cat like reflexes because as a hunter u shouldnt ever get near ur enemy.
with that build basically u should use ur pet as a tank and jusdt let him rape them. most ppl are stupid and will focus on u instead of ur pet when infact ur pet does almost equal dmg as u do. if they begin to chase u either use viper sting to lower mana or use concusive shot and and serpant sting. and also make sure to spam arcane shot and if possible multi shot