John, I would use the re-locator plate. It seems like the easiest, most straight forward solution to the problem with the least amount of modification nonsense to deal with. I would not relocate the radiator if I didn't have to. Might as well take advantage of other peoples' tried and true solutions.
I'd also do it before you assemble the front clip rather than waiting to see how it goes and possibly having to do it when the truck is all put together.
