If the weight is more than 3kg600, get a long can 1350kv T8. It will give you more torque. If the weight is under, go for a 1400kv.
I've tested about all motor kv ratings from 2S to 6S on a 1/8 buggy and a 1350/1400kv 6S setup will give you everything you need: torque, low temps, long runtimes and less stress for your ESC. Higher voltage setups are really better overall.
