Are you saying light comes from the north until late in the day, or are you saying there is a window facing north and a window facing west.? The reason I ask is that light that enters from a north-facing window is bluer and lacks intensity. Subtle color is washed out to gray. The Inchyra Blue is very dark, looking more charcoal with a green tone to me. I would choose the Cooks Blue. Here is a comparison I put together of those two colors with some blues from your rug.While the actual colors may be off due to how color can vary from monitor to monitor Cooks Blue is brighter and won't fade as much in northern light. Also, having a brighter blue on the walls should bring out the blue in your rug. The only way to know how it looks in your room is to buy a sample and paint a board as you did for other colors. Keep in mind that the color temperature of light bulbs you use will also affect the colors of your walls and furnishings. Color Temperature is expressed as Kelvin but is not a measure of heat. Warm-white bulbs have a color temp of 2700K which is kind to skin tones but gives a yellow light. Daylight bulbs have color temperature of 5000K to 6500K, but are harsh to skin tones and emit a blue-white light. Both CFL and LED bulbs come in various color temperatures. I recommend you choose bulbs with color temperature between 3500K and 4500K for a more neutral result. HERE is a photo of how different K-value lighting affects the appearance of color. You might have to visit a lighting store or light bulb specialty store to find neutral white bulbs. As to ceiling colors, people seldom look up. Unless your light fixtures are dramatic or the ceiling color is distinct I doubt anyone will notice if two adjacent rooms have different ceiling colors as long as there is a Framed Passageway between them.

Comes in 8 x 10 and 9 x 13

I think a rich cream color would look very nice with the rest of the room. I am thinking something very much as the pillows in the left of your photo appear. Then if you're not totally wed to the mirror above the fireplace you can bring in artwork and some candles to pick up the cream of the chair. I assume the recliner you mentioned is in the upper right hand side (where for some reason another commenter moved a television into place.). A pillow or small throw placed on the chair can correlate to the rich cognac color of your sofa and love seat. Good luck.

Center the sofa on the far wall (where the TV currently is) and put the end tables on each side. Get matching table lamps (26"-30" tall) for the end tables. You can put a larger piece of art over the sofa. This will address the immediate focal point as you enter this room. Keep the loveseat where it currently is, centered on the wall between the windows (if there's enough room when you move the sofa). Place the coffee table in front of it. If you need to scooch it down a bit that's fine, but I generally like to try centering off of architectural features first. You're looking at an arrangement something like this: You can then purchase a TV cabinet/console that will go on the wall opposite the loveseat. There might then be enough room to get a pretty side chair to angle in to the seating area. With this arrangement, you address conversation needs and also TV viewing. I wouldn't do an accent wall. Just keep all of your paint light and neutral. The carpet you have is pretty ... if you like it keep it. It looks as if you've already pulled some colors from it for your throw pillows. I would remove your valances, you don't need them with your fabric shades. Pretty furniture and a nice start to your room!