Personnaly, I don't see how one could make it work if the wood has to be purchased. The price of wood will keep pace with respect to the fuels that are not being burned, like oil or gas.
The extra cost of a wood burning appliance and the storage and volume needed for wood, seems like would take forever (if ever) to recover.
Seems if one doesn't have a supply of firewood in the form of a woods at home or at least nearby, it would be best to stick to gas or oil and keep an efficient appliance to convert it to heat. The extra time invested in handling, caring for, and loading a wood burner could be better spent at an hourly job or one building things to sell.
Purchased wood should be bought at least two years ahead of the burning season, so it can be split, stacked, covered, and dried for heating. That is a big investment. Counting on being able to buy wood that has been split more than a mere 6 months isn't likely to be a very good efficient conversion to BTU's. Most homes burn about 6 cords of wood a year (that is 6 real cords of 128 cuft volume, not a face cord). I'd suggest buying the wood ahead 2 years, and plan on investing that $1000-$1200 each year just for wood, and then get the wood burner set up (probably another $3-4,000) so when years comes up for starting to burn the dry wood, there will be about $6,000 - 7,000 invested. Then each year plan on another $1200 plus keeping up with inflated gas/oil prices.
Don't mean to put a damper on any plans, as you are welcome to do whatever you want. But I don't see it in the cards as they are turned up on the table, so to speak.