This may not be very helpful, but in room like that, I'd get some Ikea stands for my speaker (You can see them under my name in the picture) and push everything against the walls. When you want to listen to music pull them out 3 feet toward the black soffa and listen in the near field. That's what I do with a narrow room. It's just one option.
Oh, your dog brings back such ahppy memories of the goldens i owned when i lived in the states. Now, in Copnehagen, i have not that much room and I have a little dansk-svensk gaardhund named Rene.
How did you get the pictures to download.