What Neu for 5s in 8T?

[kevin23]

I raced the 8-t today,the motor was awesome on the 5s like said.
temps never broke 130 on the motor,and for the moment the mmm is holding up.I have put a cc bec on the truck to try and take the load of the servo's off the mmm bec.
after the 15 minute main with a couple warmup laps,around 18-20 minutes total the 5000 5s pack took 4500mah,probably didn't have but another min or so in the pack.
so is 20 minutes about right for runtime or should it be a little more?
And the nitro guys really hate my electric's
here are pics of final results after the 15min mains
Thanks again for all the help and info,
Kevin