My smoker that i recently got is 84"x32". I would like to make it a reverse flow smoker. Ive been reading and reading all the great threads on here about smoker builds, and looking at the ratio calculator. So ive got most of the measurements as far as the smoke stack, firebox, vents, etc. But i havent seen anything on how big to make the baffle plate? Meaning how far down the length of the smoker do i carry it? heres some pictures of the unfinished smoker.