Nicely done. I like where you're going with this. I am going down a similar road, but looking at an ipad mini in the center console. I'm looking at Out of Sight Audios Mark 3 bluetooth receiver

http://www.outofsightaudio.com/mark-3.html

It's only 14 oz. I'm not much past that, but starting to think about the small self powered bazooka tubes, and running 2 speakers off that internal amp. If I can get it up under the dash and do a quick disconnect, then I'm only left with 14oz and 2 speakers on track days. I can live with that.

I am also looking at dash command and using it to monitor air intake temps after the AWIC with the addition of an additional sensor. You definitely have a better setup as far as being able too see the interface. Again, I like the direction you are going, can't wait to see the finished product.

Travis