OK, I ordered my temp controller:
http://cgi.ebay.com/ws/eBayISAPI.dll...m=250037037517
Got it for $50 including shipping.
Picked up my interior sheet metal today. It took 3 1/2 sheets of 4 X 10 18g galv @ $65 per sheet and $47.50 labor to have all the pieces cut for me. $297. I thought about trying to make some kind of a line follower for my plasma cutter, then said the hell with it, let them cut it. I'm not going to get the exterior sheet until I have the interior sheeted and the frame assembled. That way my measurements won't be too off.
Hopefully my furnace cement will be here tomorrow and I can get to work. I looked all over town, Lowe's, Home Depot, a few small hardware shops nobody had the cement. So I ordered it from McMaster-Carr. I went to a rinky-dink hardware store today, and lo and behold the only people in town to have it, and I already ordered it on-line. Damn!