May I also suggest the following, in no particular order...
1. Make sure you have a sim.
2. Have space for "cardboard bombers."
3. Include an MCC course
4. Don't forget to bolt-on "English" and have available English tuition for non-native speakers. A nice little earner!
5. Don't be the cheapest.
PM
Oh, and listen hard to Bristol. They appear to know what they are doing.