Vee, a great looking room, with lots of shiny reflective surfaces, if i after a similar build may give some advice, you might need to look at building a room within a room, else sound proofing would be a no show, so to speak. Check my profile posts, you will find it there. Elsewhere, i think Kent kassler or Rodney said that you can have average speaker but with a properly treated room, they will sound like much higher quality speakers, same for having great gear in a bad acoustic room, just to the wrong way... my biggest investment was the soundproofing / acoustic treatment. Enjoy the journey and May you spend many a good evening in there!
