So this 100 year old milk house is being repurposed into a smoke house, and I'm looking for as much advice from the pros as I can get. The dementions are 8.5 feed wide 7 feed deep and 7.5 tall. Looking for advice for heat source, would like to be able to reach 250 degrees and something that I don't have to baby every 15 minutes. Also any suggestions on roof shape