recommendations for new HT room

i try to addition a HT room.does any one know how to build a new HT system room (like what do i need for sound isolation,power.....what size of room when i used B&W 802D,how height for ceiling....I been thinking about 16'wide x 24'long x8' tall :THE FLOOR:sub floor, with 3/4" solid harwood floor.THE CEILING: making 4'x4' box beam.SIDE WALL:will making 1/2 wall for wood panel,and the other half i will using fabric wall cover up to ceiling for all around the room.What do you think ????? ANY RECOMMEND WILL HELP. THANKS YOU ALL !!!!!