First sandstorm/batton pass team

Hey guys Ive made my first sandstorm team with a batton passing shell smash and was wondering what you think of it. It is just for a local competition where anything is allowed except legendaries.

Tyranitar @ Expert Belt
Sand Stream
Adamant
EV's 4Hp, 252Atk, 252Spe
Ice punch
Fire punch
Crunch
Stone Edge

Garchomp @ Bright Powder
Sand Veil
Adamant
EV's 4HP, 252Atk, @252Spe
Outrage
Earthquake
Swords Dance
Double Team

Blaziken @ Leftovers
Speed Boost
Adamant
EV's 4HP, 252Atk, 252Spe
Protect
Swords Dance
Hi Jump Kick
Flare Blitz

Alakazam @ Life Orb
Magic Guard
Modest
EV's 4HP, 252Spd, 252Spe
Psychic
Focus Blast
Shadow Ball
Hidden Power Ice

Excadrill @ Air Balloon
Sand Rush
Adamant
EV's 60HP, 252Atk, 196Spe
Sword Dance
Earthquake
Iron Head
Stone Edge

Gorbyss @ White Herb
Swift Swim
Timid
EV's 60HP, 196Spd, 252Spe
Shell Smash
Baton Pass
Surf
Ice Beam

Honestly, sandstorm makes it hard to Baton Pass boosts, given that the passers and recipients may not have enough time to survive on the field, due to Sandstorm chipping away at their HP. You could try if you want.

Tyranitar is slow as heck, and is better off using bulky spreads to take advantage of the 1.5x Special Defense boosts it gets in Sandstorm. It can also use Choice Scarf if you really want it to be fast:
-Stone Edge
-Crunch
-Pursuit
-Superpower
Nature: Adamant
EVs: 180 HP/252 Atk/76 Spe
Item: Choice Band
Ability: Sand Stream

or
-Stealth Rock
-Crunch
-Pursuit
-Fire Blast/Superpower/Stone Edge
Nature: Sassy/Careful
EVs: 252 HP/4 Atk/252 SDef
Item: Leftovers
Ability: Sand Stream

or
-Crunch
-Pursuit
-Stone Edge
-Superpower
Nature: Jolly
EVs: 4 HP/252 Atk/252 Spe
Item: Choice Scarf
Ability: Sand Stream

I know that your team is for a local competition, but just in case, remove Double Team from Garchomp, since your opponents might frown down upon the move. Replace it with Fire Fang or Stone Edge. To make it easier for Garchomp to set up SD, you can use Yache Berry or Haban Berry to weaken Ice or Dragon moves, respectively.

Blaziken is an Uber. Given that your team has a hard time with bulky waters, I'd suggest Ferrothorn to help take them on:
-Spikes/Stealth Rock
-Leech Seed
-Power Whip/Protect
-Gyro Ball/Thunder Wave/Protect
Nature: Relaxed
EVs: 252 HP/88 Def/168 SDef
Item: Leftovers/Shed Shell

Given Alakazam's general fraility, you can opt for Focus Sash to help it live a potentially fatal hit, bar multi-hit moves.

Excadrill can't learn Stone Edge. It can learn Rock Slide, but not that move. Why that's the case is beyond me.

Given how strong (and fast) most of your Pokemon are already, Gorebyss seems like overkill on the team, though it can use Shell Smash to help Tyranitar overcome its Speed problems. Most of your Pokemon are physically-oriented, so Skarmory and Gliscor could be potential problems. Starmie can check/counter both quite nicely:
-Hydro Pump/Surf
-Ice Beam
-Thunderbolt
-Rapid Spin/Recover
Nature: Timid
EVs: 252 SAtk/4 SDef/252 Spe
Item: Leftovers
Ability: Natural Cure