Good luck. With a derailleur, no amount of e-shifting magic can shift while stopped. And even with a hub shifter, most “automatic” systems I’ve used have an a

Good luck. With a derailleur, no amount of e-shifting magic can shift while stopped. And even with a hub shifter, most “automatic” systems I’ve used have an annoying failure in which you slow or stop briefly, try to start pedaling again, and discover that the system has chosen that moment to downshift several steps and you actually can’t go anywhere until it’s done.