Just a couple of things I learned over the years . Pellet stove will work but the one I had (Englander) was over rated as far as how much it would handle Sq foot wise but this is an old farm house . Mine is an early model , something about it wouldn't burn corn . Pellets started getting so high that I lost interest and the only way to buy them right is by the ton ,That adds up to 50 .. 40 lbs bags that have to be kept absolutely dry . The bags always leaked and if you had some left over the mice loved the pellets . Pellet stoves I have been around are all power exhaust so if you lose power ( Needs 110 to run the exhaust motor ) they are Not a back up . ATM I'm back to a wood stove .
Had a fireplace and took it out . It had a blower on it but by the time you could close the dampener any benefit was sucked out .. 1st thing I did after getting the wood stove working was move the thermostat . Wood stove was in the room with the stat and so there were times when the wood stove would burn down low but have enough heat to keep the furnace shut off . The house on real cold days would be pretty uncomfortable before the furnace would pickup and run ..
One more thing to remember is kids , Can you block them from getting to the stove ?? When little ones are here I shut this down just so that worry is gone .