My primary Pokemon D/P Team

[Steller the Raichu]

Here is my d/p team as of now

Duskodron (Giratina) Level 100 (Balanced stats)

Moves
1. Shadow Force
2. Earth Power
3. Dragon Pulse
4. Fly

Mewtwo (Mewtwo) Level 100 (Highest Special Attack of the team) (Holding an expert belt)

Moves

1. Fire Blast
2. Solar Beam
3. Blizzard
4. Aura Sphere

Fiachimp (Infernape) Level 100 (Decent balance between Attack and Defense and Specials) (holding a quick claw)

Moves

1. Rock Smash
2. Strength
3. Flamethrower
4. Cut

Drillidon (Rhydon) Level 91 (Highest attack of the team) (holding a razor fang)

1. Horn Drill
2. Earthquake
3. Rock Climb
4. Stone Edge

Moltesteel (Heatran) Level 91 (High special attack and decent defenses)

1. Iron Head
2. Rock Smash
3. Lava Plume
4. Strength

Seazel (Floatzel) Level 90 (Fastest on the team and only female)

1. Surf
2. Waterfall
3. Crunch
4. Aqua Jet

What do you think of my team and how can I use them effectively. I have been playing Diamond for 5 years going on 6. I would like to take my battling to the next level, so how is my team?