Mephistopheles

Hey everyone,
I am thinking about adding the SAT to my new 550i. I found a tutorial on here that provided instructions and part numbers and I was wondering if anyone else has done it and can verify I have the correct part numbers:

Concole Cover- 51169123873
Sport Button- 61319142869
SAT Shifter- 61319208271
ECU- 61319204093

Also, the dealer is telling me the program alone is $375 (3 hours at $125 per hour)..I think I am going to put the parts in myself and then have them program it. Does this cost for the program look ok and how many hours labor should I expect to be gouged for?

Anyone suggest a good place to pick up the above parts?

Thanks in advance to anyone that can assist!