Multi-media is a key element in the production. Use of multi-media greatly reduces or eliminates the need for props, scenery, and costuming.
A minimum of eleven is required to perform the show. Extras will be required for the "Arrival at Rockwell scene where a crowd simulation is required.
Ideally a live band (4-5 piece inc guitarist, bass, drums etc) is required for all but five songs which use backing tracks (provided).
The musical is nearly all sung. So, if you have to choose between a good singer and a good actor, choose the singer and teach them to act. The songs should all be within the range of reasonably capable singers.
More is better. But the style of music means a small backing vocal group of 6-10 would be fine. A determining factor will be the amount of room on the stage for a vocal group.
Minimal props. The main props in the show are items that can easily be obtained. No scenery required. Costuming is quick and simple to enable fast slick transitions. Usually just changing a jacket or the like.