I just did an AHS mini-mash last weekend for the first time using a 3-gallon cooler for mash tun. I plugged everything into Beersmith, and got different amounts of water for mashing and sparging, so I used them instead of the AHS instructions. So far, so good. I hit the SG within a point, so if that's any indication, it all worked out.
Primary: SNPA Clone
Secondary 1: AHS Stone Ruination IPA Clone
Bottled: English IPA
Bottled: AHS Bavarian Hefeweizen