As an exercise, I think you may want to decide the size of business you want to move towards. If you plan to stay at 100 to 300 machine runs, you could model your exercise on a small shop like Spooky. If you want the business to grow to 1000+ machine runs then you need to consider the infrastructure this would take and you could model your exercise on JJP or Heighway.

You could learn a lot and impress your teacher by contacting Charlie at Spooky, Andrew at Heighway or Jack at JJP for an informational interview from a direct source.