Nice work, Link! 

Looks nice, Link!

For the power inlet, I think I would have gone for 4-pin XLRs, like the type used in the film industry. They have the same bodyshell as the audio XLRs, but pin 1 (always ground) on the male connector is longer than the others so that it makes conact first. It's up to the designer how the other 3 pins are used, but there's a moderately standard pinout convention for low-voltage power.

Thanks Chris...never seen a phone style connector used in this way before...

Thanks Boswell! Totally agree with using a 4 pin, The discussion went back and forth the best connector style. This is where we ended up.