What are the big red scratch-outs? Furniture you aren't keeping? First step is the couch, second is the rug and third is the paint. Paint color should be based on fabrics and textiles (seating and rug) in the room. It can be custom blended, but the furniture is set in stone. When you shop for the rug, it should be 2-4 feet wider than the sofa. Slip it under the front 1/3 of the sofa and have it extend past the ends by 1-2 feet. You can use painter's tape on the floor to figure out the best size for your sofa and room. I'd replace the dining rug too, so the two are coordinated. In addition, push your TV credenza against the wall and put the TV on a swivel base to adjust for viewing.

My living room layout is very similar! I had my couch horizontal in front of your window creating a entryway, maybe put a console table behind the couch.

Since it is all so open, I would paint the same color in the kitchen, dining and living. Maybe the creamy white of your dining chairs would work throughout. If you don't want to paint the kitchen, you could bring that same color into the dining/living. Or you could take another shade from that same color strip/card and bring that into the living/dining. Other improvements: your rugs are too small, and so are your lamps. Your dining light is dated and your art is dissonant and not hung correctly. The coffee table is too large and heavy, and I would match drapes to the wall color once you figure that out. I do like your red cabinet and blue cache-pot! Have you thought about installing drown molding? How high are your walls? Here's a creamy white on walls (Navajo White) and brighter on trim (White Dove) so you can get the idea, even though this is not the style of your home.

Please think carefully about French doors. They take valuable floor space and adversely affect furniture arrangement. Do yourself a favor: use brown paper or newspaper to cut the half circle pattern opening and closing a door will take. Double that to represent the French door pattern and lay them on the floor where you plan your French doors. I agree they are elegant, but I had a pair in a breakfast room and daily resented the useless wall space on either side.