I purchased a new very tight house with radiant heating from the slab. I am looking into cutting the propane costs, so I want to install a wood stove. The house is ranch with an in-laws apartment above the garage. The main portion of the house in an open floor plan with a kitchen, living, and dining area about 400 square feet. The entire downstairs is 1200 square feet. The in-laws apartment is 700 square feet. Right now we are just trying heat the downstairs with the wood stove but eventually we want to break through the wall, put an interior set of stairs in and make the in-laws apartment the master bedroom. Should I put in a wood stove designed to heat both places, or put in a smaller wood stove to start and then upgrade the stove when the master suite is done? If smaller wood stove first, any recommendations on stoves?