OK so it's all done.
57mm caliper with the 312mm rotors is really good.
However it wasnt all that simple with these new calipers.
It so happens, VW fucked something up with the bleeder screw design on these 57mm calipers because when I tried to bleed them, it was impossible to get the screw to seal and it would always leak.
In the end i had to goto a local auto-parts store and get compatible bleeder screws which sealed on the 1st attempt. So for anyone that will buy these calipers separately for this upgrade, KEEP that in mind.
In addition to that front caliper bleeder screw(s) issue, this week I called the dealer so I could buy the 272mm rear rotors and matching calipers but I was told they cannot sell the rear calipers anymore for the time being because VW found a fault with them and halted sales while they do a quality control check.
Well gee! I wonder if the exact same issue has been discovered with the rear caliper bleeder screw and they are investigating this situation.
Part # for the affected rear calipers: 5QM 615 423 A and 5QM 615 424 A