Ouch. A brave nature, that hurts. However, you can still make it move quickly if you use a move like Thunder Wave or get a paralyzing Bolt Strike, maybe even Baton Pass or Tailwind team support so I'd still give it some Speed EVs anyways. You can even go for a Choice Scarf set.
Try 252 Attack, 136 Defense, 120 Speed.
If you don't think you can pull off that kind of stuff, replace that 120 Speed with 120 HP.
