That's the beauty of having a wall of screen. I can save a setting for games (say 120 inches for sims) or 80 inches for SD content.
The legs that support it may be an issue moving forward. I may need to shorten the pieces on the floor and weigh it down instead of using the back wall cross brace to keep it from falling forward and square to the room.
Sounds like you have a good plan. Are you planning some sort of removable masking for the different screen sizes?
Ha! 145" would be awesome, but awkward, at that distance.
