Help with Team for OU

[KeitaroU7]

Registeel @Expert Belt
EVs: 252 HP / 168 Atk / 88 Def
Ability: Clear Body
Impish Nature
-Stealth Rock
-Earthquake
-Explosion
-Ice Punch
Registeel starts off as the starter of this team to set up stealth rock. Also, it can be switched into most of the teams weaknesses so It can act as a tank. Explosion for when Registeel is about to die


Smeargle @ Salac Berry
EVs: 244HP / 12 Def / 252 Spd
Ability: Own Tempo
Jolly Nature
-Spore
-Belly Drum
-Substitute
-Baton Pass
Smeargle's strategy is to switch into something slow, spore it, Belly Drum, Substitute then pass to either Medicham or Salamence.

Medicham @Choice Scarf ? (not sure on this)
EVs: 4 HP / 252 Atk / 252 Spd
Ability: Pure Power
Jolly Nature
-Brick Break
-Psycho Cut
-Thunder Punch
-Ice Punch
Medicham combined with a Belly Drum Medicham, it can basically tackle most pokemon for at least neutral damage with devastating results.

Togekiss @ Leftovers
EVs: 252 HP / 64 SpD / 192 Spd
Ability: Serene Grace
Calm Nature
-Air Slash
-Nasty Plot
-Roost
-Baton Pass
The Special Baton Passer of the team. Set up is pretty simple: Nasty Plot a few times then Air Slash and Baton Pass if need be. Roost if you wanna keep it around longer.

Alakazam @Choice Scarf?
EVs: 252 SAtk / 4 SpD / 252 Spd
Ability: Synchronize
Timid Nature
-Psychic
-Focus Blast
-Signal beam
-Hidden Power (Fire)
Combined with Nasty Plots from Togekiss, the results can be devastating especially with Alakazam's already massive Sp.Atk. General Strategy is to come in and sweep like crazy. Plain and Simple

Salamence @ Life Orb
EVs: 84 Atk / 216 SAtk / 208 Spd
Ability: Intimidate
Mild Nature
-Draco Meteor
-Earthquake
-Fire Blast
-Roost
Salamence can take a Baton Pass from either Smergle or Togekiss and be able to wipe the field. This set works preferably with a Togekiss Baton Pass to up the power of Draco Meteor, is strongest move. Roost is there to keep it around longer.

I am not sure what to do as far as some of the items or if I should change some pokemon here and there. Let me know what you think. Thanks!