Ferrothorn is a little tricky. I would make sure he has 0 Speed IVs so a Gyro Ball would work. I would have his EVs at 252HP/88Def/168Sp.Def. He should run the moveset of: GyroBall/PowerWhip/ThunderWave/LeechSeed
I don't know about Larvitar though. Maybe 252 Atk/192Speed/64Def?
Thanks for your input! That part about the 0 speed iv's for a Gyro ball was brilliant. But he won't be able to dish out that much damage. So i guess he'd be a tank
And with swampert, would this work?
Moveset Ev's: 172 HP / 252 Atk / 84 Speed
~ Waterfall / Aqua Tail
~ Ice Punch / Stone Edge
And I think those Ev's with Larvitar would be pretty good. Maybe a little boost to hp or defence by halfing speed or something ;D