My room has the same dimensions and it probably has a ton more stuff in it too, but I've gotten my home theater to sound pretty good despite the obstacles.
All my HT speakers are wall mounted and set to "small" in the processor so I don't experience any boominess from their close proximity to the walls. The 5 channel amp I'm using is rated at the high end of the recommended amplification for these speakers, so it controls them quite well. I'm using a single 12" subwoofer which for this room is plenty. Anything bigger would probably be too much, and could be more difficult to integrate. A single 10" might suffice.
As for room treatment, that would depend on the specific needs of your environment. Curtains over windows is a good start, and anything like books on shelves to reduce reflections might help. It's tough to recommend room treatments without knowing what else you intend to have in the room with your gear and furniture.
Having no experience setting up a home theater in a large room, I think a small room is easier, as long as there isn't anything in there to throw off the symmetry of the layout.
Good luck!
All my HT speakers are wall mounted and set to "small" in the processor so I don't experience any boominess from their close proximity to the walls. The 5 channel amp I'm using is rated at the high end of the recommended amplification for these speakers, so it controls them quite well. I'm using a single 12" subwoofer which for this room is plenty. Anything bigger would probably be too much, and could be more difficult to integrate. A single 10" might suffice.
As for room treatment, that would depend on the specific needs of your environment. Curtains over windows is a good start, and anything like books on shelves to reduce reflections might help. It's tough to recommend room treatments without knowing what else you intend to have in the room with your gear and furniture.
Having no experience setting up a home theater in a large room, I think a small room is easier, as long as there isn't anything in there to throw off the symmetry of the layout.
Good luck!