Note: This post has been languishing in the drafts folder for a while. I just, this weekend, finished the install. Rather than going over the entire saga, here's the result and lessons learned.
Note: The Edison board has been removed from Nomad and two Raspberry Pi B+s were installed. In time these will be swapped out for Pi 2s, but I had B+s on hand, so that's what went in. The decision to go with the Pis over the Edison had to do with support, or the lack thereof, stemming from issues getting the joystick device to install properly. When attempting to get Nomad to run as BARB did I discovered there joystick was not available on the Edison. After nearly 2 weeks of working with it, scouring the forums, etc., I could find no solution.