I gonna use a 8XL on 4s like teknorc suggested. I hope it will not go too hot
Well the motor's gonna get hot, it's a fiego But seriously, everything should stay pretty cool, but the motor will heat up. I suggest Mikes motor heatsink clamp, it's pretty awesome and fits with the Tekno mount. And if you're really worried about temps, just buy some fans and put them on the motor and ESC.