We actually need more photos of all of the room and in better light. I think your first priority is to anchor the seating group with an area rug. It should be at least 2 feet wider than the sofa, or wide enough for the two chairs to sit completely on it. Rugs should also slip under the front 1/3 of the sofa so you don't get a skimpy look. Keep it at least a foot away from the hearth. End or side tables should arrive at the height of the arms of the seating piece they're with, and when topped with a lamp, the two should reach 58-64" above the floor.