I have a 2017 MK7.5 Golf (with the Discovery Pro 9.2" screen) which I'd like to add factory parking sensors to so that it gets integrated into the system with the Optical Parking Sensor setup.  I see you can buy the kits from Oz or Europe: https://eurocarupgrades.com.au/volkswagen-golf-7-optical-parking-sensors-retrofit-kit-front-rear-ops-oem-5q0919294b.html#ig_lightbox2[gal]/8/
Any advice on whether this is a feasible upgrade and who could do the installation and coding in Chch? Thx

Really surprised it just did not come as standard on your car.
Would be a mission installing I guess cutting bumper ect, Maybe the bumpers are already set for the holes to be punched out.
Coding could just be done with vagcom I would say.