I see. I wasn't sure where the other door way was. Yes, I think two sofas and two armchairs would work. The problem with sectionals is that they really don't seat as many people as you would think, because adults generally like to have their own "space" and no one wants to sit in the corner or the middle. Ideally you would want the walk way from the the door to the sun room door clear. But because of the off center placement of the fire place and your need to seat larger groups, you may have to bend the rules a bit. How about scooting the window sofa up a bit, to get a more centered arrangement? Sofa tables and consoles are great to stash ottomans underneath for extra casual seating. How would something like this work for you? It will comfortably seat six adults, eight snugly and nine if you count the ottoman as a casual perch. When shopping for sofas, look for a bench seats. They're a little easier to smush people onto because they don't have any cracks.

I moved some things around and I think I like it better. I know the rug is too small and it shouldn't be "floating" but I don't want a new one until we get the other changes done. I moved the dresser into the dining room and hung (probably too high but couldn't convince 6'3" hubby to lower it and he had a point about being out of reach of the tornado. haha) the sign and pictures that had been on the mantle in the dining room. We also took off the ridiculous trim board they had up because we will be replacing the slider soon. So many things in this house like that silliness. I organized most of the books and moved the bookshelf. And grabbed a few canvases (I know they are small but can't remember where we left my big one) I did the flower, my dad painted the one on the right in Vietnam in '68. We need to fix the coffee table my dad built that's in the garage, I'll put it in front of the sofa, it's a little under 6'long, so it might be technically too big but, again, it's what I have. How'd I do?

This is my 15 x 25 LR with 2 seating areas a huge fireplace and a bench to allow seating facing either way. The space is a bit rearranged just getting ready for the Xmas tree but you get the idea.

Pics are best posted here in a comment . A to scale plan is alway good showing windows doorways and any other element that might hinder furniture placement like a FP .The room in these pics is alittle longer than yours but the same width I would just put the TV where we have the non functioning FP I think you could put the sofa where had the bench