I am looking at buy a regency ultimate 39 (u39) gas stove. It is showing 38,000 btu input. The area it is being installed in is really open and there is about 700 sq. ft. of open space, with cathedral ceilings in one are with a ceiling fan. My house is an energy star home, tripple pane widnows foam insulation nice and tight. would this heat the area or do I need something bigger? I thought about wood or pellets or corn but the wife would have to do most the work because of the hours I work. thanks, Chris