Be very careful on the size of the sectional, often people buy one too big for the room and your room looks a bit cozy in your photos, and the furniture crowded. Also a sectional is very limiting on how you arrange the room, often can be used only one way. I think you would be better served with a sofa. Also the photos show the TV over the fireplace, which puts it high for comfortable viewing. Consider the alternative of the TV on the wall to the right of the fireplace.

I really dislke sectionals IMO arm restas = comfort and so 2 sofas gives youy 2x as many people with arm rest so not brainer 2 sofas.

You have options. As with all situations, YOU NEED TO MEASURE THE FURNITURE BEFORE YOU PURCHASE IT SO IT FITS!!!!!!

Consider two sofas same fabric. Chairs can be the accent if needed. If you’re a one and done person (never rearranges room) then sectional is okay. Given size of the room a sectional may be quite limiting due to TV placement.

Compact space. Traditional layout. You can design for laptops, phones and tv for several family members together. A sofa with a chaise or one at each end and a large ottoman to push up to the sofa and use for snack platters. This allows laying down with a large screen on the opposite wall from the windows.

Think who & how uses the room. Do you like end tables for drinks. Who puts feet up. If a section, who will sit on what parts?

You might consider trying two sofas with two chairs. It seems like a sectional might over take the space and make it harder to make different furniture arrangements in the future. Here is a recent design of ours that we did for a client. Notice the two sofas and how they match one another:

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