Rate my Omega Ruby team?

[Mike_]

Some of these are Smogon-based, while some aren't. I like to experiment with Pokémons' strengths and weaknesses. I would greatly appreciate feedback. Here are the main Pokémon I use:

1. Chesnaught (M) @ Big Root
Ability: Bulletproof
EVs: 252 HP / 4 Def / 252 SpD
Careful Nature
- Seed Bomb
- Drain Punch
- Bulk Up
- Leech Seed

2a. Charizard (M) @ Charizardite Y
Ability: Blaze / Drought
EVs: 4 HP / 252 SpA / 252 Spe
Modest Nature
- Flamethrower
- Solar Beam
- Focus Blast
- Dragon Pulse

2b. Charizard (M) @ Charizardite X
Ability: Drought / Tough Claws
EVs: 4 HP / 252 Atk / 252 Spe
Adamant Nature
- Flare Blitz
- Dragon Claw
- Crunch
- Dragon Dance

3. Sylveon (F) @ Leftovers
Ability: Pixilate
EVs: 252 HP / 252 Def / 4 SpD
Calm Nature
- Calm Mind
- Refresh
- Toxic
- Hyper Voice

4. Hoopa-Alt @ [no item]
Ability: Magician
EVs: 4 Atk / 252 SpA / 252 Spe
Hasty Nature
- Hyperspace Hole
- Thunderbolt
- Drain Punch
- Dark Pulse

5. Jolteon (M) @ Choice Scarf
Ability: Quick Feet
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
- Thunderbolt
- Hidden Power Dark
- Shadow Ball
- Volt Switch

6. Dusclops (F) @ Eviolite
Ability: Pressure
EVs: 4 HP / 252 Def / 252 SpD
Bold Nature
- Calm Mind
- Confuse Ray
- Will-O-Wisp
- Shadow Ball