For Bronzong, I'd recommend replacing Faint Attack with Gyro Ball, if you could. Latter deals damage depending on how slow Pokémon is, and generally, Bronzong is quite slow. If you ever do have the chance, you should probably consider placing Garchomp or Salamence somewhere on your team; after they get their stats boosted, they'd be able to take down nearly any Elite Four member, and even Champion herself.
Everything else is looking good, in my opinion!