Can you really see guests sitting in chaises? Unless these are for specific users, use second sofa or accent chairs.

I too would go with a rectangular table for dining and, while still leaving plenty of space, let the seating area be roundish with four small comfortable armchairs surrounding a small round coffee table. This post gives some ideas.

Is that the 'dining' area? A long rectangle is expected. The unexpected could be fun!

I like a rectangular table for dining and with your space a rectangular table with leaves would be great. You should still have space for a couple of nice wing back chairs with a small table, this would create a small intimate area. The wing backs could also be used at each end of the table when needed.

I like the rectangle table instead of round! I love the openness of your space

Thanks all! I meant 4 not 5 chairs in seating area. We are a family of 4 (a teen and tween girl) and live casually, but still like to entertain. The LR windows face south and have amazing afternoon light which is why I was thinking chaises, (for me more than guests) to read and nap.
Would 2 seatings areas work? Small round in kitchen and a rectangular along right sunroom wall. A seating area in between?

I meant would 2 dining space work in the sunroom. With a seating area between. Symmetry is a bugger for me and I need to have a sense of proportion in that space.

I think squeezing in two dining spaces and a seating area is too much. Even if you can do it, it's not good to fill the space that much. Leaving plenty of "white space" (empty space) enhances the serenity. Less truly is more.

if you like multiple seating areas, i would suggest getting a sectional for in front of the fireplace along with your twochairs, long rectangle dining table with ample seating by the sliding doors, to the right of sectional have more of a lounge vibe with chaise chairs and plants galore 🤗

i know its not perfect but i hope you get the idea! also maybe put some louver doors in the office looking space next to lounge?