Ideally for movie watching your TV should be where the center of the screen is at eye level at your seating position. In your case that most likely is not possible so my suggestion would be to mount as low as you are able.
If for movie watching often mounted high may cause neck strain. For casual TV watching/sports while in kitchen or entertaining then a little higher should work.
Bill
If for movie watching often mounted high may cause neck strain. For casual TV watching/sports while in kitchen or entertaining then a little higher should work.
Bill