I will be mounting the Sony to the celing but then have a 15 stretch to my reciver which is in a built-in rack on the same wall as the screen. Should I just use the AV cable that comes with it or should I try upgrading the cables now before I drywall? I am running a plastic tube in the celing so I could possible change cables down the road. Also any ideas about screen types? The PJ will be 12 feet away from the screen and I'm hoping for a 82 inch diagonal screen. I would like to have my center channel behind the screen, is there any screens that will admit sound with out distortion? Thanks