I didnt take into concideration the thickness of the tang at the pivot hole. Thanks for this important point. I dont have any big razors to work on so ill go with half the thickness of the tang at pivot hole as a size to shoot for. Little more little less. And with that i can figure out the angle of the bevel so the thin end of bevel will be what it will be.
This is great info. Thanks.

Now do you agree with the spread on the scales at the pivot end being an inch with only the wedge in place at other end? Or is this a bit much?