There are no rules.
I think the bass drum does sound appropriate, once the dubstep starts (which sounds pretty great, by the way). But as far as the intro, I don't think the drum set fits. You might want to change it to something more understated, and let the phased out leads bring you into the dubstep part. Then take off with the drums that are already there. All the squeals and glitches are great! Cheers!