I definitely do feel like I got lucky with the spacing of the two chains.
That is a good tip that it isn't a great idea to pedal around all day. Good idea about dropping the drive chain for the pedal of shame should the situation arise.
Unrelated, I think that I have my LED /battery /with recharge working. I'm running my light circuit through a regulator rectifier, but the light still flickers. However, by putting a 12V li battery pack in series, the voltage seems to be buffered and the batter pack charges. More testing needed to see if it makes enough current to charge the battery under normal conditions. My batter pack has a switch, so I am not worried about discharging the battery.
I tried some more complex setups, but the relay wasn't seeing enough voltage to do what I wanted.