Would you mind sharing the design with us? I'm looking to do exactly what you did so my wife and I can rack out in the 4Runner if we don't feel like messing with setting up a tent.
Looks awesome!
Only issue I see......is it will be practically impossible to get at your hidden storage areas unless the top side is empty and you can lift the whole platform.
Unless I'm missing some details in the photos?
In my world, the back area is never, ever empty enough to make that feasible.