Thanks for the enthusiastic comments.
Patrick, Ted: The room started out at two story and 25' x 35'. Dennis lowered the ceiling so that maximum height is now a little over 13'. This provided the capability for a star ceiling.
Chris: Screen size is in the "Equipment" section of my site. I'll let you do the arithmetic.
ebr: The little squares are projection windows for my six slide projectors. I also have the associated programming equipment that operates these projectors automatically and provides accompanying sound.
Art: You're always welcome for a visit. (I have this gap between my front teeth.....

) However, right now my projector is sitting on the floor awaiting a solution to a mounting/cooling difficulty. Like all the other problems encountered along the way, this one will be fixed shortly. I think it's safe to say, though, that you will prefer the PQ of your stacked CRT's, since I've pushed the envelope in terms of system performance of the components I have for the sake of a large image. Did someone say "the Sony projector?"