Drew,
Very nice and well thought out.
The only thing I would have done is include a real battery monitor in stead of just an ammeter.
I do have some very minor suggests based on your note board (also a good idea - we use the reefer door).
If you have a Maglite, look up "Auto clips" usually <5$us.
You really need Reds for the map lights in the cab (so you don't lose the night vision), but that can/will make the red road on the maps disappear. I really don't have a suggestion, if we need paper maps, we stop and spread them out on the dinette.
Matt