From Thermotech's website: Firstly a double hung window is not as air tight as a casement window. The double hung window has to slide, so its weatherstripping can't be as tight as a casement or it won't slide. That's obvious to most people. What is not so obvious is that sliding windows aren't as air tight as casements because the weatherstripping changes plane. Think of the bottom sash of a double hung. The bottom and side rails are weatherstripped along the edge of the rail. But what about the meeting rail? It's weatherstripped along the outer face. It is difficult, very difficult, to maintain the integrity of the air seal through this change of plane. Despite the fact that double hung windows are inherently draftier than casements, this does not have a major effect on your annual heating bill. The reality is that as long as new windows can maintain their tested air tightness (this topic will be the subject of a future column) very little of the window's heat loss is due to air leakage. Most of the annual heat loss from reasonably tight windows is from conductivity losses through the frame, spacer and glass. This is where double hung windows really fall down, (so to speak). All sliding windows have inherently cold frames compared to hinged windows, like casements. The sash in a casement window is "insulated" on the inside by the hardware cavity. The sash in a double hung window has no such advantage. Another inherent thermal weakness in any sliding window is the meeting rail. Thermally it is the weakest part of any sliding window. The upper sash in a double hung not only loses heat through its outer face, but also through its lower edge. It is cooled on two sides. That's why the bottom edge of the upper sash experiences condensation before the lower sash.

You need a lower piece of furniture under the TV, and it should be 25% wider than the TV's width. Consider unblocking the window so you can get all the light possible. Place the 3-seat sofa with its back to the camera and the TV right of your window. A tall piece of casegoods like a bookcase or secretary can to it the TV's place. Place the coffee table 18" or less from the sofa.

This is not a difficult design problem and does not need so much condescending discussion. Adding width to the dormers on the inside faces and tuning the plan at the stair is one way to do it. Perhaps adding a shed dormer between the gabled dormers and set back 3 ft would help too. A “classic Cape Cod style house” would not have a portico, dormers or a porch and a common 3/4 Cape would have one window on one side of the door and two on the other side. You can’t drive far on Cape Cod without seeing one. Criticizing someone for an imbalanced elevation when they have asked for a solution to that very problem and failing to offer a solution is ridiculous and unkind. There were some unusually mean people here a decade ago and it appears some may be back. I’m not surprised the OP canceled her account.

WARNING: Posting your entire floor plan opens you up to facts you may not want to know, but should. Be prepared for suggestions that will make for a better design. Keep a thick skin, open mind, sense of humor, and a glass of wine within arms reach. You may not enjoy it, but everyone else will and you will be better off in the long run if you heed well the advice.