I use pretty well the same set, my EVs vary a bit to my taste, but not much. One thing I would suggest is to use Big Root, it gives a 30% increase in power to Hitmon's STAB Drain Punch (150 power after factoring STAB, Iron Fist, and Root Boosts). As Drain Punch is the most used attack on this set, increasing its power (and recovery) further will only help your success.