I would suggest two chairs. You will have more flexibility in this tight space with not too large of chairs. I would suggest moving your desk where your futon is . Face it toward the ocean (lucky you) on that left wall. Then turn your shag rug so that it covers the back of the room ( near the hallway). Put your two chairs facing the ocean as well but in the area where your desk is now. Angle one or both of them ( depends on the amount of room you have). Get a small round side table to place in between them. Sit back and have a cup of java and enjoy.