Those numbers are scary.... 108" screen to use the entire moon's surface would need to be what 994 ft to the triplet. But where to find a triplet that's 994 feet?
The focal length calculator is an intresting toy... go plug in the numbers. ;-)
orbit: 384,400 km
diameter: 3476 km
A laser baised project might be more feeasable.....
Soorry,,, good cough syrup today...