I might have to steal your setup. LOL.
How do you figure the flight time?
Opposite of IC... with IC, when the smoke stops, you're done, with E-Power, when the smoke starts, you're done!

OK OK, I have no idea, but I couldn't resist.
I would imagine with E-Power, you're going to have to set the dip switches (or programmer) for the time you want based on battery size/motor efficiency and your estimated stamina, heh... and hopefully your timer does the burp thing towards the end to warn you, since you won't be flying a pattern which helps make the timing a lot more obvious.
EricV