My team now stands as
Galvantula (M) @ Focus Sash
Ability: Compoundeyes
EVs: 252 SAtk / 4 SDef / 252 Spd
Timid Nature
- Energy Ball
- Bug Buzz
- Sticky Web
- Thunder
Yanmega (M) @ Life Orb
Ability: Speed Boost
EVs: 4 HP / 252 SAtk / 252 Spd
Modest Nature
- Protect
- Bug Buzz
- Air Slash
- Hidden Power [Rock]
Scizor (F) @ Scizorite
Ability: Technician
EVs: 252 HP / 252 Atk / 4 SAtk
Naughty Nature
IVs: 30 Atk / 30 Def / 30 SAtk
- X-Scissor
- Bullet Punch
- Aerial Ace
- Swords Dance
Volcarona (F) @ Air Balloon
Ability: Flame Body
EVs: 4 HP / 252 SAtk / 252 Spd
Modest Nature
- Fiery Dance
- Quiver Dance
- Bug Buzz
- Roost
Escavalier (M) @ Assault Vest
Ability: Shell Armour
EVs: 4 HP / 252 Atk / 252 Spd
Adamant Nature
- Sleep Powder
- Quiver Dance
- Bug Buzz
- Hidden Power [Ground]
Butterfree (F) @ Leftovers
Ability: Tinted Lens
EVs: 4 HP / 252 SAtk / 252 Spd
Modest Nature
- Sleep Powder
- Quiver Dance
- Bug Buzz
- Psychic
This line up is going extremely well already, using Galvantula as a lead w/ Sticky Web and the sash to ensure it can always set that up. Butterfree is still there for the pure fact it's taking many people by surprise.
See the last 2 Scizor sets I posted. Aerial Ace doesn't let Scizor accomplish much besides hitting Breloom and Heracross, which are hit hard enough by Bullet Punch. Scizor appreciates the raw power and coverage of Superpower, the utility of Knock Off or the recovery in Roost. When maxing out Scizor's HP, use 248 HP because going for 252 makes it take more damage from Stealth Rock or Spikes.
I'm confused about your Escavalier set. Were you meaning to use the set I posted? Because I saw that it's using one of Volcarona's or Butterfree's sets, and Escavalier has moves that it can't even learn. It's also too slow for max Speed.
Volcarona is neutral to Ground, so it doesn't need Air Balloon. For offensive Quiver Dance, use Life Orb or Lum Berry; for the bulky Quiver Dance set, use Leftovers.
As I mentioned before, I don't like having Butterfree on the team because it's outclassed by a lot of things. Venomoth does what it can do better, because it has better Speed:
-Quiver Dance
-Bug Buzz
-Sludge Bomb/Psychic
-Roost/Sleep Powder
Nature: Timid
EVs: 4 HP/252 SAtk/252 Spe
Item: Life Orb/Black Sludge
Ability: Tinted Lens