Hi, My home theater room is 40 feet X 25 feet with a 12 foot high cieling. I have Dwin projector and 152 inch screen. So far I had thrown in 2 sofas. Now I have brought in another couple of sofas. My idea is to have 2 rows of sofas. If need be then in future I can add another row. My floor is carpeted and the room has concrete walls on all the four sides. Here are the questions: (1) How to make the platform on which to put a row of sofas? I was planning to get a person who does framing to make a platform. (2) I was planning to have platform of size 16 feet X 5 feet. The idea behind was that each sofa will be maximum 90 inches long. Is that OK? (3) What kind of ply wood do I need to throw on that. 3/4 inch thick or 1 inch thick? Will it be one sheet or more? (4) How high should the platform be? I was thinking about 1 foot high but then I want to make sure that the persons in the 2 row can watch the movie as my screen is couple of feet above the ground. (5) Do I need to carpet it or can I just paint it? I was thinking about spray painting it flat black. Any ideas/pointers are highly appreciated. Thanks.