As far as solar panels, there was a discussion here last winter/ spring on heating and powering a greenhouse with solar panels. Those that contributed to the discussion provided a ton of info, maybe do a search for that discussion Good luck! David Here is a link that might be useful: My blog with greenhouse pics and info

I think it's looking really good, and I'd just keep it simple. You have your great ceiling and floors, and beautiful paint color, so I think I'd keep everything else neutral and muted. Maybe cream, khaki, a teeny bit of blue and yellow? If you need shades/blinds, I'd go with something really unobtrusive, like solar shades. http://www.blinds.com/control/subCategory/categoryID,17

No, not necessarily going for coastal look. I have a built in book case with coastal decor, I have collected on my travels. I want to change rug, and chair.. This room was dark before. Want a light and inviting room,,, homey ,, I have young grandchildren....

Can you add the fireplace (may help for re-sale) but make it so that you can still have room for TV on one side (either in cabinetry or on a console that flows with the fireplace)? That way the TV won't have to be on top of the fireplace. Or maybe your space is big enough to have the TV on the wall opposite the FP and then you can have 2 seating areas (one around TV with sofas, chairs, etc and one around FP with 2 chairs and small table). If swivel chairs can be placed across from TV wall (interior wall), then they can also be used in FP grouping for conversation. Just a thought.