sheet metal extrude

So below I have a sheet metal part that i would like to extrude up to the face of the panel with the radius on it. I can do that but when i move the radius farther from the origin i need that extrude to extend with it and i can't seem to figure that out. the way i did it before was to extrude the front face forward past the radius then i used a cut extrude to follow the radius, But if i have to move the radius panel out there's a void there then.

SolidworksParts And Features