Subtracting necessary pathways for the hall, island seating, and patio doors you have about 15' x 14.5' area to arrange furniture. With built-ins it'll shrink to about 13' x 14.5'. That should be plenty of room for a nice seating arrangement.

36" is the recommended minimum path width and 30" is the bare minimum. 44"-48" is the recommended path width behind someone sitting at the bar for another person to comfortably walk behind them without having to slide past sideways.

Thank you so much Cd! That really gives me a better idea of what we really have to work with.

You're welcome!

Hi Jennifer, so sorry about the fire! You have a very large space that will fit a lot of furniture. You can place the sofa in an L shape facing the wall opposite the kitchen. This way, TV can be viewed from kitchen as well as dining. You can easily accommodate some storage along with a large dining table in the dining area. The corner to the left can actually be used to place a console table as an entryway or you could also make it a seating spot as its right next to the window.

Upload more pictures of your furniture and I could help you more with this. All these images have been rendered from an interactive 3D build of your specific room, so I could easily add any furniture preferences you may have.