The plan he stated is to have a trailer rig that can be towed. That would allow more flexibility. I can see problems with that as well, but, the ability to either have the smokers or not, that actually makes sense, especially if you get into a situation where your vend site is smaller than desired, or you end up having to vend something other than Q.
I do wonder, at least out here, all trucks and tents need to have separate money/order windows from food/serving windows. Have you either built in the ability, or determined that you will not need separate windows?
Is that enough refrigeration? Are you going to be vending other than BBQ? If so, that looks a little less than optimal for meats and other items.
Whip It Off, Chambers!
"perhaps...but then again...maybe not..."