Help with room layout?

[sam_g]

Spent the last 5-6 hours reading based on a google search - thanks for the great forum! I'm torn between trying to figure out what to get, sofa/loveseat/chair or a sectional combination but was hoping to pick y'all's brain first in terms of layout.

The great room to the bottom left is about 20 x 20. On the east side, with a walkway the furniture would have to start 30" into the room. On the west side, the hearth comes into the room 52". Need to keep walkways on the North and South sides, budgeting generous walkways at 4'6" that would leave around 130" for the width of a sofa/sectional. Another constraint would be on the South side, where the stair into the room starts at about 100" in.

Facing TV to the west and facing the sliders where the view is to the North are other distinguishing features. Initial thought was a L shape facing west and North.
It's a more traditional house with a 10 and 14 year old, would like a little more seating for guests if needed. Not opposed to chair/swivel or a sectional with a chaise or loveseat combo. Some sort of coffee table (if it fits) in the middle of the room.

Thanks a lot!