Hello all! Long time lurker here first time poster. I've recently acquire a 63" piece of 1/2 thick 30" diameter steel pipe. I plan on making a reverse flow smoker out of the pipe. Using feldons calculator, we came up with a cool chamber of 44" and a firebox chamber of 19". I know from reading here, some folks are against round fireboxes but for the money, it makes sense for me. Please critique my ideas and provide dimensions for the reverse flow plate inside, the opening on the opposite end and the deminsions for the fire box to chamber opening and the length and width of the chimney. Ty in advance, Brandon.