Awesome install mate, looks perfect.
I've an Archos tablet which was built into my 350 by the previous owner. Only issue is it has no signal so I'm guessing there is no sim attached. Have you had any issues using your phone as a hotspot, it's something I've previously thought about as it has Bluetooth connectivity.
Due to it not having any sig the apps on It will be dated, any recommendations for sat nav etc or just general apps that people think are a must in the car. It already has the torque app which is connected to the Bluetooth dongle.