Almost a B8 owner - some advice needed

[Beejayhay]

Hi,

So put a deposit down on a really nice 2015 RS4 B8 this weekend Perfect spec i was after - Suzuka Grey, Black Pack, DRC. B&O, Pano roof, 34k miles

going to get it inspected prior to pulling trigger. I've specifically mentioned to the inspection people i want DRC and disks checked out, but is there anything else specific i should be mentioning? (they say they have loved at RS4s before). Apparently they use 'thermal readers and sonoscope equipment for testing engine, transmission and braking systems - so have mentioned that they can suffer from carbon build up - dunno if that would be detectable with the above.

I'm in West Yorkshire, so near Leeds/Bradford - there's main dealers in both, but can anyone recommend a good indy specialist that would still keep the Audi Ext warranty I plan to get valid?

Cheers