Snorlax or Azumarill?

[diamondsword92]

I have been working on VGC 2018 teams for a while, and am planning to use a Belly Drum/Psych Up Mimikyu. However, I would like feedback over whether to use Snorlax or Azumarill. It would be great if I could get feedback on which to pick. Azumarill has better physical Defense between the two, but lacks Special Defense. Snorlax has great Sp. Def, but lacks Defense.

Sets:
Snorlax @ Aguav Berry
Ability: Gluttony
Level: 50
Shiny: Yes
EVs: 252 Atk / 244 Def / 12 SpD
Adamant Nature
- Recycle
- Earthquake
- Belly Drum
- Facade

Azumarill @ Sitrus Berry
Ability: Huge Power
Level: 50
Shiny: Yes
EVs: 252 Atk / 244 Def / 12 SpD
Adamant Nature
- Belly Drum
- Aqua Jet
- Protect
- Play Rough

Next to:
Mimikyu @ Mimikium Z
Ability: Disguise
Level: 50
Shiny: Yes
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Play Rough
- Protect
- Shadow Sneak
- Psych Up

Play is planned to go as following:
Turn 1: Belly Drum user uses Belly Drum, Mimikyu uses Protect
Turn 2: Belly Drum user attacks, Psych Up is used
Turn 3: Belly Drum user sweeps alongside Mimikyu or is sacrificed in the Psych Up
Remaining Turns: Mimikyu uses Play Rough, Shadow Sneak, and Let's Snuggle Forever as needed. Let's Snuggle Forever is basically used to guarantee KOs. Back normally contains:
Celesteela @ Leftovers
Ability: Beast Boost
Level: 50
EVs: 252 HP / 252 Def / 4 SpA
Bold Nature
IVs: 0 Atk
- Leech Seed
- Protect
- Flamethrower
- Flash Cannon
and a Blaziken-Mega, Silvally, or Landorus.

Sorry for such a long question description.