If the weather's good, take the zoom. You never know what you'll want to shoot - wide angle for in the cockpit, intermediate for the landscape and telephoto so you can see the whites of the enemey's eyes as he goes down in flames!
Color me jealous.
I'd go wide angle. Just get a shot or two, inverted is possible and just enjoy the rest of the ride. Don't use up the whole 30min looking through the lens.
Count me in as jealous too. Enjoy the ride.