Sorry to hear about the scratch. I’ve just been through this issue. I am not sure where you are located but a specialty Porsche shop or other “into it” car shop will have a “chip guy”. They are around. And yes don’t do it yourself. It takes a bit to get the color texture etc correct. Porsche...
I have a 2024 Macan 4 with 22’s. Ride is amazing. Tight sporty ish (for an SUV). I was a bit concerned when I located the CPO car but the ride has been great. Good luck with the GTS.