How's my new Platinum team?

Because I always picked Chimchar, I decided to start a new game to try a different starter.
This is my new team. I'm currently at Veilstone City, and I haven't beaten Maylene yet.

Aqua (Prinplup) Level 29
Metal Claw
Growl
BubbleBeam
Pluck

Vlad (Gengar) Level 29
Sucker Punch
Shadow Claw
Sucker Punch
Focus Blast

Drake (Houndoom) Level 28
Fire Blast
Roar
Bite
Beat Up

Earl (Staravia) Level 29
Roost
Double Team
Quick Attack
Wing Attack

Skylar (Gliscor) Level 30
Earthquake
Stealth Rock
Faint Attack
Defog

Victoria (Vespiquen) Level 29
Heal Order
Toxic
Bug Bite
Power Gem