First VGC15 doubles team and Help on last pokemon

[Cypher64]

Hello im building first doubles team and using VGC15 category, im stuck on what 6th pokemon to use and i would just generally like your opinion this is what im running so far

Excadrill @ Focus Sash
Ability: Sand Rush
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Earthquake
- Rock Slide
- Iron Head
- Protect

Ludicolo @ Assault Vest
Ability: Swift Swim
EVs: 252 HP / 188 Def / 68 SpA
Modest Nature
- Scald
- Giga Drain
- Ice Beam
- Fake Out

Salamence @ Salamenceite
Ability: Intimidate
EVs: 20 Atk / 236 SpA / 252 Spe
Naive Nature
- Double-Edge
- Hyper Voice
- Draco Meteor
- Protect

Milotic @ Leftovers
Ability: Competitive
EVs: 236 HP / 140 Def / 132 SpA
Modest Nature
- Scald
- Icy Wind
- Recover
- Protect

Aegislash @ Leftovers
EVs: 252 HP / 100 SpA / 156 SpD
Quiet Nature
- King's Shield
- Wide Guard
- Shadow Ball
- Flash Cannon

Would be thankful for your opinions on team so far and suggestions on 6th pokemon

 

[Zeffy]

For each Pokemon, write a short message on why you chose said Pokemon. The reason can be subjective or objective, as long as it sends the message across.

Feel free to PM / wolf me a revised version of your post, that includes descriptions of each Pokemon, and I'll reopen this for you. Additionally, you can opt to post in the Teambuilding Workshop instead, since you're still missing 1 Pokemon.