I'm still planning out this Sun team. It's difficult though. So many weaknesses.
If I was to use Dugtrio and Xatu, then I'd have 2 Ice weaknesses, and 2 Water weaknesses (thanks to Ninetales) and 2 Rock weaknesses (again, Ninetales). Sure, all are resisted (bar Water). So I'd have to use a Grass type, which is weak to Ice. How annoying.