I wonder if you you 're going to move the TV, would it be better on the opposite wall? That way tou could have a sectional on the same wall as the TV and extend out to divide the space from the eating area. One club chair could go by the fireplace in front of the non-operative French door.

You have a very narrow room, and the existing furniture is over-scaled for the space. Look for a sleek sofa without the massive rolled arms and two upholstered chairs for an arrangement similar to the inspiration room. I would go with a low buffet or entertainment console in a white finish to complement your fireplace.