Well, the basic plan is to build in a modular system.
-Rails for the bed to sit on and be easily removed for large cargo.
-Wheel well boxes, a cabinet for water and stove storage/cooking area.
-shelves/overhead cabinets.
-cargo area for bikes/skis/snowboards behind the second row of seats.
The 80/20 will allow panels to be installed/removed easily. That way I can install all the insulation, lights, wiring, etc.
Should have enough to build an outside ladder if I want, battery box, etc, etc