to depend of your outside temp...but open the front window will certainly help (cut)and lowered the timing to minimum.....
i run my e-revo basher with this gearing setup(18/68) and in 28 min of bashing at 87f outside my motor never pass 143f,esc 110,lipo 107f on 6 cell lipo timing lowest,punch at 60% and my body is open front and rear(front windshield and rear)
just lowered the timing will help for sure