I suggest switching his and Zapdos's spots, seeming as Grass/Steel and Bug/Steel leads are super deadly without that fire type coverage.
This guy has a 115 Sp Atk stat, don't be afraid to give it an actual attacking move such as Thunderbolt, Or take away Toxic, Give it Discharge, and you now have room for coverage, and I suggest Light Clay as an item so your Light Screen will last for an extra 3 turns.
Pretty nice, Consider giving him a different Hidden Power, seeming as Jolteon already has that coveted Ice type coverage.
Screw using Volt Switch, it isn't going to do anything to your opponent anyhow, and he doesn't have the speed to guarentee not getting himself killed before hand. Go for Wild Charge or Thunder Fang.
And just something to remember, You aren't a sub- Anything without substitute. Although I see what your were saying :]
Looks pretty good, maybe consider trying T-Wave in there for Para-Attract fun.
Okay, instead of Air Cutter, give it HP Flying, you still get STAB and it will be more powerfull.
And perhaps Modest nature for a bulky sweeper instead of timid there.
I Suggest replacing Raichu ( Playing the role of a Jolteon wannabe who has to set up ) for an Electivire for more physical coverage.
Ev's 252 Atk / 252 Spd
Item: Leftovers / Air balloon
Cross Chop / Brick Break
Ice Punch / Fire Punch