One trick I have done on the ceiling issue is to put a removable ceiling in, between the floor joists. It's actually cheap and easy. You can either take 1"x3" furring strips, and nail them flat to the bottoms of the joists, in a "Tee" profile, or take 1" x 2" strips and nail them to the sides of the joists, flush with the bottom. Now cut strip of sheetrock, 48" x 14'1/4" or so, and lay them up into the bays, so that the rest on the top of the strips. This will give you a paintable surface, and still give access to any mechanical systems above. I would imagine that the interesting pic. of the black ceiling was done by spraying everything flat black. If you do the removable panels, paint everything but the panels, then paint the panels on the ground. If you spray them in place, every time they shift, you will have odd white stripes showing. Good luck