I'm getting my stuff together for my first build and have several questions I need help with. My pipe is 29.5 inches inside diameter and 78 inches long. Cooking chamber is 53312.55 FB/cc opening 213.25 Area under rf plate 213.25 Area at end of rf plate 213.25 Minimum firebox 17593.14 Segment height is 10.3 inches tall Rf plate is 28.12 inches wide I was thinking the rf plate would be several inches below my cooking grate but at 28 inches wide it's basically half of the tank which is where I wanted my bottom cooking rack. There would be about an inch between them. Also how long would the rf plate be? Just a tad confused so any help is appreciated.