Back in 2008 and 09 I put up a 92' x 46' with a 16' ceiling. That gave roughly 91' x 45' on the inside. You should take into account where the roofing joints are so the corner rake trim is over a ridge. I had a building supply co which does pole barn plans do up the materials list for me and that came to about 42,000. I had Amish put it up and that labor got close to 40,000 too! That may have included the loft over all those garage spaces. Used concrete posts in the ground with a bracket on top to set the posts on. Insulated doors, 6" studs in the walls and insulation in the walls and ceiling. When it came to the floor I put tubing in the concrete and 2" green board under the floor as well as a plastic vapor barrier. I keep the slab at 65 degrees in the winter and it feels very comfortable working in there. It takes only a high efficiency 200,000 btu propane heater to heat the water and last winter (Maryland) used about 500 gal of propane. Including concrete and the heat system ( I did myself ) the total got close to 111,000. The problem is now I need more space! I didn't mention I finished the inside with plywood and steel ceiling.