RMT / Team Help Coolflare's VGC17 Tailwind squad

[coolflare]

Hallo. This is my firt ever VGC17 team and first ever VGC team at all. I had some help from a few friends.

Spoiler: My team

@ Life Orb
Ability: Psychic Surge
Level: 50
EVs: 92 HP / 4 Def / 204 SpA / 4 SpD / 204 Spe
Timid Nature
- Psychic
- Moonblast
- Taunt
- Protect

@ Psychic Seed
Ability: Overcoat
Level: 50
EVs: 252 HP / 4 Def / 4 SpA / 228 SpD / 20 Spe
Calm Nature
- Foul Play
- Snarl
- Tailwind
- Roost

@ Choice Specs
Ability: Electric Surge
Level: 50
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature
- Discharge
- Volt Switch
- Dazzling Gleam
- Thunderbolt

@ Choice Scarf
Ability: Beast Boost
Level: 50
EVs: 4 HP / 148 Atk / 4 Def / 148 SpD / 204 Spe
Adamant Nature
- Leaf Blade
- Smart Strike
- Sacred Sword
- Razor Leaf

@ Groundium Z
Ability: Rough Skin
Level: 50
EVs: 84 HP / 28 Atk / 12 Def / 164 SpD / 220 Spe
Adamant Nature
- Dragon Claw
- Earthquake
- Poison Jab
- Protect

@ Assault Vest
Ability: Intimidate
Level: 50
EVs: 108 HP / 248 Atk / 4 SpD / 148 Spe
Adamant Nature
- Flare Blitz
- Wild Charge
- Extreme Speed
- Bulldoze

The usual plan is to always lead with Tapu lele and Mandibuzz so Tailwind can be set up at least once. The other mons are picked depending on situation such as bringing tapu koko against rain teams.

What weakness does it have? What changes would ou think benefit me? Then plz comment below.