I am mathematically challenged and need a little help. I am trying to build a 110" 16:9 screen. Simple enough....right? According to the calculator, the frame size should be 96" x 54". If I choose to put an inch or two black felt tape border around the screen, will that effect my measurements other than actual 110" screen size? Basically I want to use 8 foot boards and need exact measurements because I don’t have my projector to use to test it yet.... THANKS!