Help with my PvP Team

Hi I am new in Pokemon PvP and need some help for my Team

1:Slowbrow

- Ability: Regenerator

- Nature: Bold

- EV: 252 HP / 232 Def / 24 SpD

- Item: Leftovers

- Move 1 Scald

- Move 2 Slack Off

- Move 3 Calm Mind

- Move 4 Thunderwave

2:Ferrothorn

- Ability: Iron Barbs

- Nature: Relaxed

- EV: 252 HP / 88 Def / 168 SpD

- Item Leftovers

- Move 1 Stealth Rock

- Move 2 Leech Seed

- Move 3 Thunderwave or Toxic

- Move 4 Gyroball

3:Starmie

- Ability: Natural Cure

- Nature: Timid

- EV: 252 HP / 252 Spe / 4 SpA

- Item Leftovers

- Move 1 Scald

- Move 2 Rapid Spin

- Move 3 Recover

- Move 4 Psyshock

4:Scizor

- Ability: Technican

- Nature Adamant

- EV: 252 Atk / 252 Spe / 4 Def

- Item Life Orb (or Scizorite)

- Move 1 Sword Dance

- Move 2 Bullet Punch

- Move 3 Bug Bite

- Move 4 Superpower

5:Chansey (or Blissey)

- Ability: Natural Cure

- Nature: Bold

- EV: 252 Def / 252 SpD / 4 Hp

- Item Eviolite (Blissey Leftovers)

- Move 1 Toxic

- Move 2 Seismic Toss

- Move 3 Soft-Boiled

- Move 4 Healing Bell

___________________________________________________________________

But i dont know which Pokemon i use for Slot 6. I have some Pokemon but i dont know which matches the best.

Gliscor

- Ability: Poision Heal

- Nature: Careful

- EV: 244 HP / 200 SpD / 56 Spe / 8 Def

- Item: Toxic Orb

- Move 1 Taunt

- Move 2 Toxic (Or Sword Dance)

- Move 3 Roost

- Move 4 Earthquake (Or Knock Off)

Or

Dragonite

- Ability Multiscale

- Nature: Adamnt

- EV 252 ATK / 252 Spe / 4 Def

- Item Lum Berry

- Move 1 Dragon Dance

- Move 2 Outrage

- Move 3 Extreme Speed

- Move 4 Earthquake

Or

Weavile

- Ability: Pressure

- Nature: Jolly

- EV: 252 Atk / 4 Def /252 Spe

- Item Life Orb

- Move 1 Knock Off

- Move 2 Icicle Crash

- Move 3 Ice Shard

- Move 4 Pursuit