Hotbox Baseball - Sport

I’m wanting a custom smoker, and really have my eye on a TMG hybrid with hotbox above the firebox. It’s a fridge or cabinet style reverse flow cooker. It checks the boxes of being an offset stick burner, has the pellet hopper to finish cooks or hot hold unattended, and the hotbox which allows...

The freezer stands about 7ft tall with double doors and about 5 racks per side. I'd like to just use charcoal and not have to add any propane fueled methods. where the compressor is at the bottom I'm going to convert to the hotbox/coal area. My biggest question is how would I achieve a fairly even heat distribution throughout the entire smoker?

hotbox baseball, We have a separate "hotbox" for large cuts since we typically still have raw chicken/ribs on hand. In my book proper food storage (in this context) requires that raw meats be stored separately from consumables.