If Dick is right and the wing incidence of three degrees is too much then it'll be taken care of by you adding in some down trim during the first flight. At that point the effective angle and camber of the tail section to wing angle will no longer be three degrees. It'll be whatever the CG location demands that it be to fly level at any given power setting.

All of this stuff is not cut and dry. It's all done on a "bell shaped" curve where when you're around the right spot the minor changes have only a little effort. It's not until you stray away from ideal by a larger amount or distance that you "fall off" the top of the bell curve and are working on the steep side slopes where a little difference makes a bigger change on how a model flies and handles.

This isn't to say that you won't gain by fine tuning to perfection. Just that MOST small things won't cause a crash.