I'm looking for an insert for one of my 4 fireplaces. I want to use this to heat as much of my 4000+sqft house. The fireplace I want the insert in is located in the center of the house and is large(50x32) opening. My house has 10' ceilings downstairs and is very open with the main room ceiling of 20'. What options do I have to heat this space? I have plenty of wood and want to actually get a little heat from all I burn this year. Thanks in advance for any help. T