The measurements are in. I can safely build my structure at 10'6" x 10'6" with a 4'3" ceiling. I would be able to build my walls anywhere up to 10" thick and would allow for a ceiling with 3" of room for insulation before I hit the joist above. Still nailing down humidity and temperature. A storm rolled in that dropped the temps to 17-33 for the next couple days. That should help me get a low point. It doesn't seem to ever get higher than 62 when it is hot out. I am optimistic that temperature control will be fairly easy. Keeping the humidity up in CO might be another story.