I considered using the metal building at first. I've decided against it because it would use a good portion of room up for wood storage. It has a race trailer, camper and truck in it right now. It's an 80 foot walk from the back door to where the heater will be. I can put 2 stacks to the right of the heater and 4 stacks to the left of the heater. That still leaves room for the propane tank to be 20feet from the heater and it will all be out of sight of the house.