You've done a good job. I just don't like the ottoman floating there and perhaps a little editing would make the room feel more spacious. I don't think the mirrors flanking the tv do anything for the space. Lovely home you have!

I am looking to add seating ...

I think I'd switch the end tables then put your chair in the corner next to the sofa facing the TV. It's too bad you have to block the pretty window. Move the ottoman in front of the FP. What color are the stripes in your rug, they got washed out in the photos? You could stick with the ivory, black and red, just commit by painting the coffee table to match your darker cabinets or black, get a bold rug and add accessories. You have lovely floors and a good sized room to work with.

You have a lot of seating in there with the 4 bar stools, the big sofa, chair and ottoman. If no one sits on the ottoman, take it out. You can add a couple of ottomans on either side of the TV cabinet for people to pull out or a couple of smaller chairs to the left of the FP.

Thank you both for the feedback!

Your couch needs to face the windows