Is this staged or your stuff? Can you take more pix from different "walls" in the room so we can judge the scale and size of things? This looks like a realty photo with a slight pano to the pix which really distorts the room and furniture.

This is my stuff - will post another picture! Thanks!

I would look for a sofa instead of the sectional, so you can add two armchairs to the larger end of the room, while keeping one chair on the smaller end as it is. That will give you more seating without using a sofa that is too long for the space.