Great ideas everyone and thanks Bill G. for all the input! Love the idea of the fireplace! I forgot to mention that the house is on a corner lot. So, the 2nd exterior door is actually street front and leads to the driveway, whereas as the front door leads to the other street front. There is a 3rd exterior door out the back of the great room. I love the idea of the deck, but I'm not sure it would work as well since that isn't really the back door. Great idea, but I apologize for not mentioning that it's not the back door.
In answer to your question about the sheet rock, the exterior walls are actually block with stucco on them. They even left the exterior window frame complete with sill leading from the kitchen to the great room. Interesting DYI projects in this house including the great room which yes, is an addition. So, yes there is an opening from the kitchen to the angled room. I'd love to also widen the 5' door to the great room so you can see outside and so it doesn't seem so choppy, there's just not the space.
Weird footprint on this one, but I think everyone is right, it's the flooring to make it seem seamless and staging that's going to make this one not seem a bit off! : )
Thanks again, you all were a great help!