Sigma7 - Why wait? Could you set the stove up in your back yard and experiment? Light it up some weekend and experiment with how you pack in the wood, close off the front vent, damper in/out, etc. while you' re working around the house. That might give you a decent idea how long you can expect a load of wood to last through the night.

This might be a silly question, but shouldn' t logs last about the same in that situation as they would if the stove were in a tent?