Some details. I underestimated the thickness of two layers of canvas, glue and paint so the side door is really tight. In fact, I had to sand down the canvas in places to get it to fit. Inside, the flange has 3/8" x 3/4" sticky back neoprene foam weather stripping. The door closes with a satisfying "thunk". However the tight gap means that it holds moisture between the door and sill at the bottom. I may have to remove the door and plane off a 1/4" or so and recanvas the bottom to get a gap big enough for water to drain properly.
The Yakima rack mounts are 1 x 2 x 1/8" aluminum box channel that I cut to make "J" channels. Yakima wanted too much for bolt on side mounts! As it turned out I had just enough space to mount everything. I didn't have an 1/8" to spare. I didn't measure everything in the planning stage so I could have had real problems. Sometimes you just get lucky.

The back barn door has several issues. I made it smaller to fit after the trouble I had with the side door. But the weight of it causes the box to rack a bit. I added a "ramp" of UHWPE screwed to the step to lift the door as it closes. It fits fine but I didn't figure out the hinges properly so I have to swing it 180 degrees to get the slide out RC airplane racks out. I'll need to fix that.
The Wiley windows worked great. We had a couple hours of heavy rain the other night and they didn't leak a drop inside.
I added some D-rings lagged to the floor (that was the reason for the heavy framing in the platform.)
