Looking for some help filling the last two spots on my super-gimmicky Weakness Policy Doubles team.

Hawlucha @ Weakness Policy
Ability: Unburden
EVs: 112 SDef / 252 HP / 144 Spd
Careful Nature
- Acrobatics
- High Jump Kick
- Stone Edge
- Roost

Heliolisk @ Damp Rock
Ability: Dry Skin
EVs: 252 SAtk / 108 Spd / 148 HP
Timid Nature
IVs: 30 Atk / 30 Def
- Parabolic Charge
- Thunder
- Rain Dance
- Focus Blast

Aegislash @ Weakness Policy
Ability: Stance Change
EVs: 252 SAtk / 4 HP / 252 Spd
Rash Nature
- Autotomize
- Sacred Sword
- Flash Cannon
- Shadow Ball

Lapras @ Leftovers
Ability: Hydration
EVs: 252 SDef / 252 HP / 4 SAtk
Gentle Nature
IVs: 0 SAtk / 0 Spd
- Bulldoze
- Surf
- Toxic
- Rest

Idea is to Parabolic Charge and Roost first turn. PC deals ~50% to Hawlucha with this spread and EVs puts them exactly one Speed point away from each other, ensuring nothing gets in before he Roosts away the damage. Next turn you're looking at an effectively Sword Dance'd, double speed rapetrain. It's no Flying Gem, but then again, there is no Flying Gem. Same deal with Aegislash. Autotomize and get hit for piddling damage by a friendly Bulldoze and proceed to sweep. Other than that, general rain shenanigans. Not sure what it needs. Obviously more rain abuse would be good, but I dunno.

Also, general team thread.