Update:

I've been doing more research and found that this head unit works great with bluetooth and has very little distotion and has 6-channel 4V preout, so I'll be getting rid of my PD-450 touch screen and going back to a single din and then mounting my tablet onto the dash somehow and having a USB port in the dash so the tablet stays charged. The tablet will be easily removeable so that I can update it with my music and videos. I'll be mostly using this for music and Torque Pro.