I just made the switch to e-power using the same setup you have. I bought 4 sets of batteries (10s) and a cellpro charger. Get a deep cycle marine battery and drag it to the field (unless your field has power).

Something I did not have to do with my Webra or OS was to perform a throttle calibration cycle at startup. My CC85HV is set to "auto calibrate" which requires going from idle to full power for 4 seconds at each startup.

Do 5 break-in cycles on each battery not exceeding 50% capacity and limited or no full throttle ops. Check the mah you put into the batteries each time (obey the clock). To monitor each flight I added an Eagletreesystems data logger.

Leave the Windex and paper towels at home.