I rode K2 IPO's on the Ultra Dream and they are really tuned well for powder focused all mountain boards. So those for the Charlie if you wanna do that. Otherwise the Lights will fit really well on the Charlie too. If you go that route for the DOA I would look into K2 Formula's, Salomon Holograms (which would also be rad on the Charlie), Flow M9's, or Malavitas.
Go ahead, drink that kool-aid.
FS: Forum Sauce 142 $200 plus shipping
FS: Flux SE30 $75 plus shipping