For what its worth...
I did some research last year on BTU ratings of hard wood by the cord. Oak then the maples give the best BTU ratings (30,000,000 for the oak and around 25,000,000 per cord). I saved almost $1000 last year. I put my stove in the basement near my forced air system. I installed an alternate intake so by leaving the blower on, the air-handler takes the 100 degree air and circulates through out the house. I can't beat the return on investment. The previous year my heating bills averaged $300-$400 per month, last year they averaged less then a hundred.
Mind you is it located on a concrete floor with drywall around it and two layer of drywall on the ceiling to make it more fire-resistant. Two layers of drywall gives you an approximate fire rating of 60 to 90 minutes.
In northern NJ, full cords are running $165 to $190. I'm lucky because I'm getting 4 cords for $500 from a tree service company that I've used in the past.
Just play it safe.