You can't split the Duckbucker, as only half of it will work, so that will be wired like the diagram above. Wire the neck and middle to the push-pull pots like the diagram you found (red & white together to lugs on the switches). The Duckbucker is wired just like the diagram above. So most of your diagram will be the original diagram above, with red & white of the neck and bridge wired on the middle lugs of the respective switches.