I'm starting to think about the undercarriage for my smoker project (see http://www.smokingmeatforums.com/t/127988/rf-build-a-story-in-pictures), and I'm trying to figure out how tall it needs to be. It'll have a single cooking surface, so I'm not worried about shelves. I've been measuring commercial units and finding them anywhere from 32"-37". Where do y'all set yours? For reference, my grates will be about 24" deep, and I'll have a 6" shelf in front of the smoker, so I'll need to reach as far as 30" back. I'm 5' 10".