start froom missions for 5-10 planes. You need to see how many pilost will be interested in flying it. You need to find a good target/objective for your mission, so other pilots can find it interesting to join your mission.
you can start from mission for: 4 spits/ponys for cover, another 4-6 p47-s/typhoons with bomb and/or rocket load and c-47. FInd a good base to capture and try it :-)
If you don't have as many interested folks, but still want to run a mission - try to capture Vehicle base. then use half of values above :-)
You can capture VH by using 2 planes with no problems, but that's the other story ;-)