Very nice, looks an exceptionally clean car. Congrats.
I assume the rear camera is supposed to go in to the AUX on the TV tuner - does it actually have the TV tuner module - daft question but they are optional.
A ViseeO MBU-3000 can go in the cell phone holder, for Bluetooth handsfree, works with Siri etc but you can't stream music over it. I got a little BT adapter that plugs in to the Aux port in the glove box for that, music streams to the adapter and phone goes to the Viseeo.
Definetly find a good indy for servicing, I've spent thousands at my main dealer and the quality of work on one occasion was appauling. You might get lucky and find a good dealer but spending £110+ p/h gets old fast on big jobs.
Ditto, think they were about £90 to purchase and the fitting was fairly reasonable as I gave them back to MB during a service to fit as it was out of my level.
I still have a clean license but I drive like a grandad and haven't been really driven it for about 10 months.