My double battle strategy

[Roronoa Zolo]

heeeey guys i need to ask you some question about my startegy, because my principal is like a pokemon freak and for like a end of the year event he made this tourney like a pokemon league kinda thing. well back to my strategy.

since my whole school knows i use Sceptile,Glalie,Raichu,Arcanine,Blissey and Salamence as my team i change it up a little bit.

here is my currently training team:

Sableye
Level 74 - jolly
Shadow Ball
Mach Punch
Night Shade
Faint Attack

Dusknoir @ Leftovers (now)
Level 64 Careful
Curse
Shadow Punch
Mean Look
Rest

Banette @ Spell Tag
Level 68 Jolly
Shadow Ball
Night Shade
Grudge
Faint Attack

Banette @ N/A
Level 70 Modest
Faint Attack
Calm Mind
Thunderbolt
Psychic

Gardevoir @ leftovers
Level 80 Modest
Calm Mind
Skill Swap
Psychic
Thunderbolt

Shedinja @
Level 85 Modest
Shadowball
Mind reader
Shadow sneak
Confuse Ray

tell me what moveset to change and stuff like that.

here's the startegy:

Step 1: I'll send out Shedinja and Gardevoir
Step 2: Gardevoir will use skill sawp wtih shednija
Step 3: Sub. Shednija for Sableye
Step 4: Use Skill Swap with Sableye. this mean Sableye get Wonderguard

The purpose of this Startegy is Get wonderguard to Sableye because she/he has no weakness she/he can't recive any damage except for confuse ray and other status attacks.

This is my beta team tell me what moveset/pokemon to change. rate my startegy plz =]