You should post the photos because I don’t know how accurate are the links you have provided as regard to color.

What size would you need for the edge of rug to be under the front legs of both sofas?

Does the PB sofa creep into the hall? It does feel a little bulky for that room and you cannot get around it on the window side/no place for an end table. No need to sell. Opt1) Keep the 2 chairs,. Put them side by side as they are with a narrow table between. They are fine. OPt 2) Move one of the sofas in from the living room (appears to be a smaller size than the PB one) Move the 2 C&B chairs into the living room. They actually fit better style-wise with the living room chairs (than the blue ones). Do you need all of those chairs in the living room? Could the blue chairs go elsewhere? In other words, what combination of the living room/keeping room furniture works best?

Some people find it a huge faux pas to put a TV over a fireplace. Some people swear they can't be comfortable for viewing over a fireplace, your neck will explode from the agony, the TV itself will explode into a ball of flames from the heat from the FP, and people entering your home for the first time will shriek in horror at your set up ..... None of that has been my actual, real life experience - currently have a TV over a fireplace in 2 homes. They both work just fine. Use a tilt-able mount as having them angled downward is a must (or use the adjustable mount so that you can pull it down while watching and then push it back up when done.) No one has died, no one has shrieked in horror, still using the same TV for 8 years in one house (so, so much for the "the TV will never last!" line), and I like the way it looks. If that makes me a lowbrow lowlife, so be it.