Neutral coverage is overrated: since your Ice Beam is effectively ~135BP after STAB, your neutral coverage needs to be at least 70BP to be worthwhile (except for those rare opponents that 4x resist Ice), which limits you to Signal Beam or Extrasensory; Extrasensory is more powerful but Signal Beam gives you more super-effective hits. You can still run something like (I think best is) HP Ground for the additional super-effective hits of course.With this set, it hits everything with at least neutral Damage.