My buddy runs through about 25 cords heating a similar footprint. It's colder in MN but you have a lot more wind so it probably evens out.Montana, it's best not to keep track of how much wood I use. I heat 2 houses, 2 domestic hot water and some for the 24x56 shop. Have always planned to keep track but I burn so much junk that it's difficult to keep track. I burn construction cut offs from work, wood bunks, cribbing, tree trimmings, cardboard, newspaper, sawdust and tons of other burnables. Considering what I heat I think it's good.