The more I think this through the better it gets - it might be easiest to strap the camera to the side of the fuselage pointing outwards, with a nice knife edge pass should be able to get some excellent pics without any undercarriage or anything to obstruct the view

and if wanted to give it a swirling circling effect which would be really cool how about climb high and do a blender filming on the way down - gosh think I've missed my vocation as an artisitic film director - maybe this is my calling ???????????