Motor Choice for E-Truggy
 

I'm getting a Losi 8-T which I am going to use for racing. Maxium race length will be 10 minutes. Using a Castle Monster ESC, I've got a choice of the following to power my truggy:

1) Castle 1515 2200KV motor on 4S (which I have)
2) Castle 1518 1800KV motor on 4S (which I have)
3) Castle 1518 1800KV motor on 5S (I don't own a 5S pack yet)

What should I use? If #3, what capacity battery would I need for 10 minute races and some warmup laps with a good safety margin?

2) Castle 1518 1800KV motor on 4S

Seems the best of those choices

I would say the 2200kv would get alittle hotter than the other choices. Also I would use a battery with at least 48000mah. 5000mah would be an easy find at a good price. No need for anything more.