We're building a 2-story, slab-on-grade house and installing a Hearthstone Green Mountain 60 in the living room (got an experienced dealer/installer in our Rocky Mountain town at 8,000 ft to help us). I'm wondering about how to make sure we have air circulating in our mostly open-concept house with an open stairway. We're planning on cove elec heating as needed (to use grid-tied solar). The stove is for a LR focal point, beauty, warmth and then whole-house backup should power go out. Can you look at my attached floorplan and give me an idea of where to place returns, ducts with fire damper or whatever else we need to move heat around the house? If the stove is all that, maybe we won't need our electricity! (Note, the chimney won't be as shown below because we decided to go with a wood stove inside/no alcove and no fireplace. The freestanding Hearthstone GM 60 is going where that fireplace is currently drawn; the FP is going away/not being built. Ceilings on first floor are 9 ft, with 8 ft upstairs.) Thank you!