Hey Alex. Looks great. I am sure you are excited to get started.
My only suggestion would be to cover up that ceiling. I understand all the utilities. I have the same situation and solved the problem with a simple Armstrong 2X4 drop ceiling on a grid with removable tiles. I also have concrete floors with block walls. I covered the walls around the layout as needed with studs and drywall. I have one exterior wall that I also insulated before the drywall.
For the floor, I have 2'x2'x5/8" thick foam tiles that interlock together. You see these tiles at trade shows, etc in the booths. They are removable if needed but make a BIG difference when standing or working. The cushioning feels good underfoot.
Over time, regardless of how secure you get your insulation, it will sag and pieces will come off. Not to mention it is amazing how much dust will filter down from above. The drop ceiling will catch all of it and keep it off the layout. With a 9' ceiling, not a problem. I only have a 8' ceiling and it works for me at being 6' tall. I dropped mine down around 6" or so, not too much. I then installed 6" LED flood lights thru the tiles on a 4'x4' grid for even coverage.
My layout area is around 25' x 30' and I heat it with a 220VAC wall mounted heater. It keeps everything nice and warm during the winter. I live in southeast PA.
Anyway, that is my suggestion. Good luck with the build and keep all of us posted on progress!
Donald
