I personally have used almost the exact same set, but with Gallade.Hey ya'll. I got one more set to post atm, because i accidently posted it on the OU tier a week ago. Anyways, it's a bulk up Hitmonchan that I created because it does really well on the Shoddy Battle Server. Here it is:
Hitmonchan-Piston Pow, leftovers, Iron Fist, Careful,
Bulk Up
Drain Punch
Ice Punch/Mach Punch/Thunderpunch
Thunderpunch/Mach Punch/Ice Punch
Hitmonchan gets:
Iron Fist
Higher base Def (14 points)
Pure Fighting typing (Bug, Dark resists)
Not being weak to ghost
Priority
Gallade gets:
Higher base HP (18 points)
Higher base SpD (5 points)
Higher base Attack (20 points)
Ability to use Substitute (no toxic!)
Better coverage in two moves
More ability to force switches
Not weak to Psychic (Can beat Alakazam)
Take your pick.
Gallade@Leftovers
Careful - 252HP/252SpD/4Att
~ Substitute
~ Bulk Up
~ Drain Punch
~ Night Slash