I burned 6 chords last year heating the 2,000 square foot house to 68, heating domestic water and heating my 1,800 square foot garage to 55. My house and garage are made from SIPS panels and they are very well insulated, and the Cincinnati/Northern Kentucky area did not have a bad winter last year.
For your use I would certainly get 10+ chords ready.....or count on cutting some wood this winter.
When you can, build a small fire in the morning when you get up and another one at night before you go to bed. You will use less wood if you only build small fires and let the coals do some heating each day.....and you will make less smoke.