I started laying things out in Eagle whilst I wait for parts to arrive from Sparkfun. Mainly this has been limited to recreating what I found in the above video. Here is a rough shot without the RGB diode connected to the GPIO pins, which is an easy fix.

I also made a mockup of the device next to an Iphone 6 for size comparison. This makes me think I really need to find a way to cut down on the height of the module. I likely can cut the height to just above the Pi's USB ports. Doesn't need to be much higher than that methinks.