Where do you mount your generator?

We are about to go dry camping for the first time and we have two questions:

1) Where do you mount your generator when towing? We have a 2004 2720 and we tow with a Honda Odyssey. We don't want it in the van while driving! And we don't want it in the TM either. Help?

2) Can we get away with just one Honda 2000i generator and still run the A/C? We live in the hot midwest so we need to run A/C all night. It hasn't been going below 90 until 2am

-Amy