OK Mark, we are getting closer....
So if the maximum room height is 8' (2.45m),
the maximum room depth should be 8'x3=24' (7.3m),
the maximum screen width 24'/3.68x2.37= 15.5' (4.7m)
the corresponding screen height (at 2.37:1 projection) 6.5' (2.0m)
I then would put the screen 1.5' up from the floor.
At a viewing height of 3.5' (eye level) I will be at about 1/3 of the screen height.
Believe that's OK?
What do you think?
Maikel.