Just bought a new house. First floor is about 2200 square feet. It has a fieplace that is 33.5" wide, 37" high and 25.75" deep. Its centrally located on the first floor in the biggest room of the house.... like 35' x 15'. Would like to get a larger sized fireplace wood insert that can heat the whole 1st floor. This is a modern, newly built house and my wife will only allow something sleek looking that will not stand out too much. I want something that is going to be very efficient with a long burn time so its low maintenance, high heat. What models do you suggest we look at? Also, please asume I have infinite access to wood.