I've completed the little side project, a MOSFET switched LED indicator board. I was able to practice using hot air to solder the components all at once. This project gives me confidence that the LED circuit will work as expected in revision 2 of the Roadrunner and that I can use hot air to solder the components. That last part will be a huge time saver!
I'll have the boards fabricated within the next month or so as time allows. And after the usual round of testing I think I'll be ready to begin offering them to those interested.