Hi Daniel,
This is what I'm thinking. At first glance, I like the low mileage vehicle. But, I think how that mileage was put on is more important to me. Let's assume the 12,000kms was by the 1st and only owner, and it was not a demo car. Compare that to 3,000kms is a current demo car. I might lean towards 12,000kms. I want to avoid 'demo' and 'executive driven' cars.
https://youtu.be/BQctuPp3kjU
In a perfect world, demo drivers or 'executives' look after other people's property, but the reality may not be the same.
After that, my personal preference is a lighter colour over a black car (too hard to keep it clean).
As for the performance brakes... they look great, but they add about 15kgs of unsprung weight (and not sure if this is accurate, but I read that they are more likely to squeal). So unless you plan to track the car, do you need them? Personal preference.