I’m heating 1600 square feet. Raised ranch. 22 foot masonry chimney with 8inch clay tiles. Had a camera run through the chimney and was told it looked great and I didn’t need a liner (although I may install one anyway at your suggestions).
Any of your stove choices will be mucho more happy if you line the chimney. Keep researching stoves. Particularly Blaze King and Woodstock offerings are worth looking into according to there current users