Looks like it's going to be a great setup. I haven't tried Media Car and I didn't really like Frodoplayer, so I'm running RoadRunner and love it because it integrates EVERYTHING including Streets and trips (thanks to a fellow member here who figured it out)
I'm sure if you've gotten this far, you've found out how to interface with the cars iBus. RoadRunner works with a good iBus program (can't remember the name) Anyways, good luck. It's going to be awesome.