Alright Dave, again thank you for the help. Believe me it is much appreciated and your opinion is important.
Sooo... I have drawn up some concepts/possibilities. I appreciate Tracy sharing the pictures of his build and that is one cool pit. My only problem is I really don't want to have to tend that many separate fires. I do that already with the pits that I have access to and it is a bit too inconsistent.
Below are some scans of some thoughts. I know that some of what I say below as reference is on a much smaller scale than what I am trying to accomplish but I just want to exhaust all possibilities. A friend asked me why I am trying to reinvent the wheel, I told him I'm not I just want a BIGGER wheel.
My momma always said that I was a bit hardheaded and my wife seems to agree with her so I guess there is some truth to it. Living by the old adage "Where there's a will there's a way" I can't let anything go easily.
So, without further ado, load your guns boys and get ready to shoot me down.
1. As already stated the first one seems to have problems according to the calc., and I understand that not a problem.
2. Dave as you mentioned to me before the second one may be difficult because you may not get even heating into both ends.
I can understand that with one exception. I have seen a pit with a very similar design however it was a 100 gallon tank so it is much smaller. I was actually impressed with how well it cooked but as I said it was also easy to maintain because of it's smaller size.
3. Perhaps to alleviate the issue of not have enough opening under the reverse plate I could cut the CC in half by adding a partition. By doing this the area needed under the plate is reduced from 900+ ci. to a little less than 500 ci. This would result in two 500 +/- CC but still operate off of one FB. Each chamber would have its own reverse plate, stack, and a damper from the FB. Also if I incorporate the wedge FB in concept 4 I would be able to maximize the amount of heat that hits the reverse plate by elongating the opening between the FB and CC. Controlling the heat would be done with the dampers.
I may be way over thinking this but with a pit this size I gotta have it working perfectly, and I need it done right the first time. Besides that I eventually plan to have two of these.