t99zz australian b/w sandstorm tournament team

[t99zz]

Landorus
Ability: Sand Force
Item:
Nature: Adamant
Characteristic: Likes to thrash about (for maximum attack)
Ev's: 6HP,252Atk,252Spd
Moveset:
Rock Slide
Earthquake
Sandstorm
Rock Polish

this guy is my sandstorm setter but i m not sure on the item yet

Excadrill
Ability: Sand Rush
Item: Life Orb/ Air Balloon
Nature: Jolly
Characteristic: Likes to thrash about
Ev's: 6HP,252Atk,252Spd
Moveset:
Swords Dance
Rock Slide
Earthquake
X-Scissor

excadrill is my main sweeper for this tournament

Terrakion
Ability: Justified
Item: Leftovers/Life Orb/Air Balloon
Nature: Adamant/Jolly not sure what i can catch in this much time
Characteristic:
Ev's: 6HP,252Atk,252Spd
Moveset:
Rock Polish (if Adamant)/Swords Dance (if Jolly)
Close Combat/ Sacred Sword
Earthquake
Stone Edge

Archeops
Ability: Defeatist
Item: Flying Jewel
Nature: Jolly
Characteristic: Likes to thrash about
Ev's: 6HP,252Atk,252Spd
Moveset:
Earthquake
Rock Slide
Acrobatics
U-Turn

Ferrothorn
Ability: Iron Barbs
Item: Leftovers
Nature: Relaxed
Characteristic: Capable of taking hits
Ev Training: HP252,Def50,Sp.Def208
Moveset:
Power Whip
Gyro Ball
Spikes
Stealth Rock

https://www.nintendo.com.au/index.php?sectionID=1&pageID=404
this is the link to the tournament details also this is a double battle tournament so pls keep that in mind

also Pls Help Fast i don't have much time left for the tournament