i think what he's getting at is that he's creating the cutscene and wants to get the angles in the editor to cut n paste into his cutscene script.
in which case i think there's no way around having to keep your finger on the 'q' key until you're up there unless, as suggested, you do it at 50 meters and then change all the height variables. which is a bit tedious.
what you could do is combine the two ideas - initiate a script that gets the camera up there and then exits, leaving the camera to be controlled as normal...
erp - nope, just tested it and the camera stays on the ground. sorry mate, no way around this it seems :-\