Hungering Arrow try Devaouring Arrow
since you have The Ninth quiver is very powewrful cause u get total of 59% to pierce with 70% increase on each peircing you going to see 1m crit everytime..

Elemental Shot try Ball Ligtning
This skill can shoot the enermy twice in single shot 300%x2...

Vengence try Seethe
Regen ur hatred by 10 persec....just spam ball Lightning youll see ur hatred hardly go down...I can take down elite in single vengence use in T1

optional skill
Rain of Vengence rune Dark cloud
just pust and forget....let it do the rest,,no hatred consume
I always activate ROV and Vengence together when it come to elite

Vault
Oh shit button..less disp use then other disp skill

passive
Balistic
this is a must if you use Vengence...100% more dmg on rocket...thats make 140% for ur rocket atk
and just by shooting Hungering Arrow alone rocket will come out also causing 240%

currently I use these build ...and pawn most of the elite in few sec..
hope this help

here are mine
http://us.battle.net/d3/en/profile/lksing7...37/hero/5897671

Notes ...some of the gear are not up to date
currently have
58xk dps
6.5m toughness according to in game stat