Hinge after and then seal.

How is this plane powered? How big are the control surfaces? How many hinges each? I like to put a hinge about every 3" or so. If you do that and pin them AND you don't put the plane in terminal velocity power dives, then you should be fine. But it wouldn't hurt to put another 1/4" piece of balse behind that trailing edge at the hinge locations. Why skimp if it can cost you the plane?