Hubbard, the dimension between the speaker, center line to center line, what is it?
Based on the dimension posted on the plan of 11.5 feet (room depth), and what I see in the photo in your link, I think the speakers may be too far apart to form a solid center image. In addition, the speakers may not be far enough into the room.
I realize that pulling the speakers out from the wall may put you into nearfield listening, but it's a chance you may have to take. Some people like nearfield listening, not me, it's like headphones to me.
They say your speakers should be at least 6-feet apart, but in a small room like yours with a less than 10-foot listening distance I would go as low as 4-feet apart. My room layout actually has the speakers only four feet apart, very solid center image, and the sound/image is not very wide I must admit. However it's not the end of the world and sound pretty good.
Try moving your sub around, and bring your speakers 1-2 inches away from the center piece of furniture. Set your toe-in about 1/4 to 1/2 of what it is now. You may end up losing that center piece of furniture, placing the speakers as close together as possible without creating interference with your TV screen viewing angles.
The distance from the front face to the front wall on my system is only about 30", any closer and it kills everything. Bass goes nuts, sound flattens outs, it's just a mess. They recommend 4-feet, many people use 3-feet, 2.5 feet is cutting it to the bone, less than that is a lost cause.
You may also want to pull that couch off the back wall. If you can get your head a good 3-feet into the room, great. If not, then at least 18" with heavy sound absorption behind your head(s).
In this system his head/seating position is on the back wall like yours, you may want to PM Peter and get his two cents. See bottom of page two photo.
http://www.martinloganowners.com/forum/showthread.php?5532-System-228-(Odyssey)
EDIT: I made more comments in your system section.
http://www.martinloganowners.com/fo...eatment-for-source-floors&p=143148#post143148