This would be the LON build: http://eu.battle.net/d3/en/profile/Towenaar-2301/hero/75374061
For TX and Bounties there is nothing faster than Chicken HT Garg as WD. You won't need full ancient setup to burst through this.
For Grifts it's a choice of taste. I prefer Helltooth setup just because I found it first
Helltooth is a bit lazier just because you won't click much except for wall of death, spirit walk and piranhas. And of course gargs in the middle of a pack
LoN is a bit more work as you have to maintain taeguk and dmg reduction with firebats.
You don't actually have to cast anything in this build, you just run around picking what you want to and opening chests. You can drop fetish army for basically anything.
I think Helltooth angry chicken is faster, but LON locusts wins the lazy award.