HB D8 electric

hey guys my hot bodies d8 showed up today and it showed up with a mamba monster v3 esc and a fiegao fg 36 motor.i am running this on 5s and i was wondering how hot shuld the motor get because mine got up to 217.And also is this motor as good as the 2200kv mamba motor.i had tons of fun driving it today.it also has a rc monster hb d8 motor mount.but the onlyt bad thing was that it has a crappy pinion in it and my 2nd question is what pinion shuld i get and what tooth.also what would be the best set up for racing as far as gear wise spur and pinion.Thanks.