I bought a small cabin 24 x 24 and it has 2 x 6 walls packed with NEW R-21 insulation, attic has NEW 24 inches of Cellulose. It sits on a slab (Modified garage package) All sill plates are bottom filled with closed cell foam for the bottom 6 inches to make sure insects never get in. I am thinking of adding another foot in the attic space. I have an Avalon 996 stove EPA rated but in near brand new condition. I will also have a Big E pellet stove as backup for this winter and will replace that with a Williams Propane 35,000 or 50,000 BTU gravity wall furnace next spring. My goal is to use wood as an only heat source when home which will be 99% of the time since I retired. Basically shopping for food once a month is my only desire to leave. I need to guess how many full or face cords I need for a winter, this place is sealed up pretty tight.. Does anyone has any idea what to expect for wood use? with the Avalon 996 stove?