For a 95" wide screen you can place the projector lense anywhere from 168" to 202" (14 - 16.8 feet) back from the screen.
To avoid any keystone, the projector lense should be 14.86" above the top of the screen (assuming ceiling mount).
if your screen is 95" diagonal then
distance back is 141" to 170"
distance above is 12.5"