I have 5542 cubic inches of CC and 2770 cubic inches of FB. My thoughts were to cut into the CC about 4" high underneath the RF baffle since it doesn't leave me much room to cook afterwards if I go too high into the CC. According to Dave's calculator, that should be big enough so not to overheat the FB. Keeping with the oversized dimensions for smaller RF smokers, I am planning to use a 3.5" stack about 25" long, to help evacuate the flow. My worry is this smoker is long and lean and I hope it will work. Thoughts?