Checking to see if this set up will work. I only have 6'9" to ceiling on wall. I am putting up a 106" diagonal screen which has a 3 " border. So basically top of screen is sitting at 6'6". If I ceiling mount the BenQ W1070 will this set up work (Room is 19' long so that distance to screen is not a problem). I am mainly concerned about the low ceiling and getting the image on the screen with the top only 3" below the ceiling. 