Think there's also a DC-3 operation in Switzerland...
For DC-3 pilots, try Air Atlantique at Coventry... also Aces High at North Weald.
This is just a theoretical exercise, right?
Friend of mine did something similar for an Airline Management course or some such a few years ago... he got a bit into it and I drafted up some colour schemes on a Jetstream 31, SD-360 and Dash 8 as he contemplated his fleet requirements, and then mocked up headed paper and a nice front cover for his submission! He settled for the Jetstream. Looked quite nice!
He recently remarked to me that, had it been for real, he'd probably have a fleet of 737s by now! That, or be part of the structure of a motorway bridge...