get something that almost fills the wall space, but leave room for some round end tables and an oval glass top coffee table would be nice.

I think you might need a sectional in this room to seat that many people? And you have almost no wall space? Do I see a TV on the right side cabinetry of the fireplace? If so, then I would see about a "right arm" sectional (chaise on right side as you face sofa) and let it float in front on the exterior doors I see. But it would help if you could give us room measurements so we can figure out what sizes might be best for the space? Measure walls and distances across each side along with length of openings, etc. Then we can do some layouts for you with specific sizes to look for on furniture.