Hey up bud,
Have you thought about the different locations of the oil and water lines? Don't forget the G12 Coolant, as I assume you will have to drop the Coolant level.
I replaced the KO3 on my old MK4 and made sure I had spare exhaust manifold studs and all coolant and oil line banjo union copper seals.
Have you got a good set of Stud/nut removers should you get a sheared/rounded one? Sounds like a good days work, hope it all goes well.