Thanks for the additional photos! Understand about the art. Nice work!
Here is what I recommend:
1) Place sofa on wall where football art is, but floated out so you can walk behind it.
2) Place green chair and smaller black chair on window wall. (chairs and sofa will create an L shape).
3) Place black chair with ottoman on dining room side of fireplace.
4) no place for the other low-back chair. I would remove that from room.
5) Coffee table in chair and sofa area.
Q
What would be on the huge empty wall where sofa is now ???
Q