forgive my ignorance as I've just started doing my own work on my car (I've worked on my bikes myself for years). I'm about to do my brake pads and if I understand correctly, I just need to pop out the retaining pins (two per caliper), remove old pads, insert new pads, and done?

What about pushing the pistons back to accommodate the thickness of the new pads? Any handy tricks? Any other things to pay attention to? should the backs of the pads be greased with copper grease? or anything weird with the brake pad wear sensor connection?

In doing a bit of research I just discovered that our front brake calipers are the same ones that are used on the R8. Which leads to the question - if it's the same brake setup, can R8 ceramic rotors be installed as a direct fit onto out RS6 hubs?