When we built our house 4 years ago we used in-floor radiant heat with a geothermal heat source. We also added a Regency FJ1100 freestanding woodstove located in the center of the house (kitchen). The stove is rated to heat 1100 sq. feet, our house is 1550 sq feet of living space + 450 sq feet of attached garage.
Frankly, I think it costs me more money to burn wood than it does to fully use the geothermal system, and we aren't buying any wood, just cutting it from a neighbour's property. By the time I factor in gas for the saws, diesel for the tractor, power for the splitter (electric), wear and tear.. etc. it adds up.
Having said that, I love the heat from the woodstove and it was a must for emergency heat anyway. We burn between 1 and 2 cords (128 cu ft) per year. Usually we set the thermostat of the geo system at 67-68 degrees F, then boost the heat level with the stove on evenings and weekends. We both work weekdays, and the cats have enough fur that 67 degrees won't bother them at all during the days.
If we were home all day, I'd say our wood consumption would be about 2-3 cords per year.
I'd recommend buying a stove that is correctly sized or even on the small side for your house and burn it hot, rather than having a large stove and a smouldering fire. If we'd bought the stove sized for 1600 sq feet it would drive us out with the heat, since we use it together with radiant heat from the floor slab.
Sean