Hey guys, I am getting ready to run my first electric outdoor season with my rc8be. The mains are 20 minutes, so lasting the duration is top priority.

So I am looking for some experienced racers to compare and contrast the following setups:

2650kv on 4S 5000 mah, 14T pinion
1900kv on 4S 5000 mah, 19T pinion
1700kv on 5S 4000 mah, 17T pinion
1350kv on 6S 3000 mah, 19T pinion

Thanks for any information/advice.