Awesome! From what I was reading that seemed to be the best choice for this setup. I think I'm going to sell my original iPad mini and pickup one of the new retina versions with 4G. Then the iPad can be connected whenever, and I can run a hotspot from the iPad to connect other devices in the car.
I've been interested in surround view camera systems for a while. I test drove a BMW with my mom about 2 years ago and they had a top town camera system that was just unbelievable. It was like having a helicopter fly above you and send video to your car at all times. You could park literally by only looking at the in dash screen, it was awesome. I've kept an eye out for aftermarket versions for a while and they are just starting to come out. I went with this one here:
360° Surround View 4-CH DVR System. It uses four 180 degree cameras and stitches the image together. It also functions as a DVR so it's like having a surround view dash camera. Well worth the money in my opinion. Theres a few videos on YouTube of it and it looks great.