I wonder if the airport people know that the motorcycle people don't want us racing on their section. I don't think it would be possible to make two courses and not use that section. (actually we can use their section for straights ONLY AFAIK, no turns or launches lol.)
I don't see how sharing would work either. Set up two separate timing systems on the same course.
Either way, it looks like more headaches with no benefits, someone is going to have to cancel.