Just a point here on garages, whatever size you do, set it up so you have good ventilation, user friendly ventilation, welding, grinding and painting, you want to get it so you can clear the air out fairly rapidly, then you won't lose your cool or warm air.
Keep your shop clean, with clean air in it, it's a lot nicer.
Chassis, Body Jig, Trunk Pan Pics.
http://webpages.charter.net/2manitowoc
Paint booth, Ventilation, etc.
http://www.2manitowoc.com/paintroom.html
Rob