Small Room... Big Stereo

Great system. I assume the general placement is governed by the doors and the room parameters. Assume speakers go on from the front wall out by a couple feet and in from the side wall by a three feet as a starting placement. A triangle puts your seat out six - seven feet from speakers. Then work on the room.

The room sounds like a challenge. I would work on it before the equipment arrives. But if it sounds like an echo chamber I would not delay. If you can, complete carpeting. If not, area rugs covering floor from speakers to listening area. I use hanging Afghan rug (see my profile for system photos) on front wall, for a small room like yours, on rear wall as well. Or you can use heavy wall hanging or real acoustic panels, but these must be ordered and carefully placed. Then some kind of deadening material at wall reflections (to listening seat) on your left and right (tall rectangular framed acoustic panels. I would treat the room until all obvious echos are gone.

That should be the basics. Then you can work on any specific issues that remain like ceiling. Maybe Tube Traps in both front corners. If area rug bolsters where front wall hits floor. Small corner (little triangular) acoustic dampeners.