There seems to be less than 3 feet between the end of the couch and the sliding door. You may want to try placing the couch facing the fireplace. I think a larger rug is needed for this room than your mock-up shows.

Looks like you have four people in your family. How many guests do you want to accommodate?

I will put together a 3D rendition with some suggestions for your consideration. Do you want this to be an adult game room too? Best Wishes, MAE Day

If I'm to go my the pictures and the floor plan there is something really wrong.

The wall you show as open is actually closed

Please confirm.

If you want a sectional with a chaise then this layout will work.

Here is the rendition, using your dimensions, with some suggestions for your consideration. Only the layout is being suggested not the colors or styles. A bookshelf and play area is included.

Hope this helps. Best Wishes, MAE

Here are a couple more.