Need help on my Team

[AutumnLeafeon]

I think my team has a flaw but im not sure.

Yeah its only 5 pokemon I plan on adding Leafeon into the team too.

Raichu@Magnet |Quirky|Static|202 HP
Attack: 161|Defense: 105|Special Attack: 155|Special Defense: 139| Speed: 203
Thunder Wave
Thunderbolt
Thunder
Sleep Talk

Garchomp@Life Orb |Timid|Sand Veil|303 HP
Attack: 225|Defense: 194|Special Attack: 165| Special Defense: 165| Speed: 234
Dragon Rush
Earthquake
Dragon Claw
Brick Break

Pidgeot@Leftovers |Bashful|Keen Eye|218 HP
Attack: 163| Defense: 147| Special Attack: 128| Special Defense: 121| Speed: 178
Roost
Air Slash
Defog
Fly

Gardevoir@Metronome|Mild|Synchronize|254 HP
Attack: 151 | Defense: 148 | Special Attack: 330| Special Defense: 273 | Speed: 188
Dream Eater
Attract
Psychic
Future Sight

Manaphy@Leftovers|Timid|Hydration|
Attack: 214|Defense: 236| Special Attack: 236 |Special Defense: 236 | Speed: 265
Hydro Pump
Recover
Waterfall
Surf

help?=3