Skip,
One inch per panel of dihedral sounds pretty good. The dihedral brace supplied with the kit looks to have at least three inches per panel and possibly more, I haven't measured it, just eyeballed it.

I looked at KingAltair's rudder and your earlier photo in planning my rudder. The swept rear end of the fuselage presents challenges with making a straight hinge line. Not impossible, but does require moving stuff around. I took a simpler route and added an inch and a quarter to the movable rudder, so the hinge line stays at the same location but the moving mass is larger. We'll see how it works out.