Garage heaters ?

i'm in process of making addition to my car "shed" enclosed 26 x 36 ft. will be insulated 2 x 4 walls, tin roof. missouri is NOT that awful cold on average. would something like this work and be economical? or should I just do the wood stove deal????? Barrel stove will end up costing a good $100 stove kit, barrels, and flu.?????

Might be a stretch for a 5000 unit. They seem to be targeted for an average 2 car garage size. Your insulation, especially ceiling, will definitely help no mater what you use. If you have no ceiling you'll be heating that area for a long time.

IMO, I'd think twice before using and certainly check my insurance coverage concerning wood stoves in garage or shed.