RE: Building Surface question
I bought a pair of folding table legs at Home depot. I then put a 1x4's (4 of them) all the way across the bottom side of the door (not much strength in middle of door to run screws into). I then attached the folding legs to the 1x4's. This give good support and yet is storable if wanted. The door ends are solid so I attached vertical supports there and then a crossbar from which I hung a dual tube-4 ft fluorescent lamp for good lighting. Also put a power strip on each upright.