The display is way too small - a display width of 2/3 seating distance is a nice starting point which can be adjusted up or down depending on preference (once you've adjusted to movie theater scale). This matches the subtended field of vision you'd have in the farthest seat from the screen in a decent THX certified cinema. Display width is about 16/18.3 times the diagonal measurement.
I sit 11' from an 87x49" screen for most sources, and good scope transfers look better at 9'.
I sit 11' from an 87x49" screen for most sources, and good scope transfers look better at 9'.