My entire car buying experience with Kuni was horrendous. I would never purchase another vehicle from them. It is interesting that they were awarded the Center Excellence award despite the negative rating I gave them on the survey. But then again, it is all about making the sales numbers. I think purchasing out of state like you did is the way to go.
I had my car serviced at Kuni for the 1200 mile service however someone who sets up an appointment with them may need to clearly state the specific "1200 mile service" if not you will be lectured that the car does not need an oil change until 15k miles. The service advisor looked puzzled after I pointed out that the vehicle they will be servicing is an M3. The SA had to recheck their service library.
I was planning to order my exhaust online and have a local shop install it for a competitive price that I learned from another forum member.