Right now I'm using Visage of Giyua+Skorn+3pc Zuni's for an AA build, and anything MP3 or below is cake. I can do MP5 slowly and painfully, but from what I understand, AA is best for lower MPs. I'm considering switching to Zombie Bears to remedy this, but I foresee severe mana difficulties in the future.
The Zuni 4pc would certainly help alleviate this. The way I see it, I have two options to get this:
1) Switch from Skorn to a 1h+String of Skulls
2) Switch from Visage to a Zuni helm.