I really love this build, since i read your build i dropped my beast ba and picked up my hoto from the dust. Together with a spirit & a faith on the merc i finally felt why you like this build so much.
Think that people like the act 2 merc cause they can have more aura's, that maybe why they think it's so much better. Maybe it's better @ dmg but with a beast ba you lose a lot of FCR & Res (what i think is more important then a bit more dmg) + a dieing act 2 merc all the time in CS prevent me from returning there for a while.
Unlike you i'm just running the default gear parts instead of the stylish stuff what indeed looks good (bloodfist & darkforce) Not to mention those 2 sexy amu & helmet your having. kinda jealous of that i must say..

My build is some different then yours since i didn't +++ my golems & only putted one point in it. It's also not something i would put point in unless i was playing ladder, cause it's really going to cost me BIGTIME if i would die

, Anyways if i would have the money i would certainly go a simalar direction.
conclusion:
With your build you show that you're experienced with necromancers, or atleast with summonmancers.
Giving a act 1 merc a faith is not what most other people would do cause they would choose for a act 2 merc & a beast ba in there hands
I'm not saying that it's bad but knowing i have enough damage output i would rather go for a bit more speed, mobility and a merc i can actually do CS with

Saying this i give your guide a 10/10
Looking forward to your next guide. cheers!