Ok so I've replaced the door with an interior wooden slab door... No windows yet but they are coming.
Finally a couple of plexiglass windows cut in with double pain layers. Later when I'm rich I'll replace this door with a steel exterior door with the window already in it.
Overlay the floor with 3/4 inch plywood screwed to the floor with self tappers.
Glue down the indoor outdoor carpet. (still need to work the seams.)
Drilled hole and fed the 50 amp power cord through from the outside.
Fastening 2x4 wood to the walls with self tappers so that later panels and other things can be added and anchored to them.
All wires were run in this low space so that later screws can be driver up higher with confidence and no risk of hitting the wires.
Panels install in progress
Looking more finished all the time. Still need to hook up all the outlet boxes and mount them solid.
Bonus photo of all the guys telling me, "I wouldn't have done it that way"