Dark team advice needed

i have recently been developing a dark-type team and could use a lot of advice on whether my choices were good and how to use them. I was scared off from using Tyranitar by it's ability.

Physical Sweeper

Weavile

Pursuit
Brick break
Ice Punch
Night Slash
Ability: Pressure
Item: Expert Belt
EV spread: 4HP/252Atk/252Spd
Nature: Jolly (+Spd, - Satk)

OR

Honchkrow

Brave Bird
Superpower
Night Slash
Sucker Punch
Item: Choice Band
Ability: Super Luck
EV Spread: 4HP, 252 Atk, 252 Spd
Adamant Nature (+Atk, - SAtk)

Special Sweeper

Houndoom

Flamethrower
Dark Pulse
Nasty Plot
Hidden Power (Fighting)
Item: Life Orb
Ability: Flash Fire
EV spread: 68HP, 188Spd, 252 Atk
Nature: Timid (+Spd,-Atk)

Mixed Sweeper

Sharpedo
Surf
Crunch
Earthquake
Ice Beam
ITEM: Life Orb
ABILITY: Rough Skin
EV Spread: 252Atk/252Spd/4Satk
NATURE: Hasty (+Spd, - Def)

Tank

Spiritomb

Sucker Punch
Taunt
Will-O-Wisp
Pain Split
Item: Leftovers
EV spread: 208HP, 184Atk, 116Spd
Nature: Careful (+SDef, -SAtk)

Shuffler

Drapion

Toxic Spikes
Whirlwind
Crunch
Earthquake
Item: Leftovers
Ability: Battle Armour
Nature: Jolly (+Spd, - SAtk)
EV spread: 252 Spd, 252 Def, 6 Atk

Annoyer

Umbreon

Curse
Payback
Moonlight
Confuse Ray
Item: Leftovers
Ability: Synchronise
EV spread: 252 HP, 252 SDef, 6 Def
Nature: Careful (+SDef, -SAtk)

i could really use advice on this team and how to use it.

Spiritomb is better off in the lead slot.

I actually think Weavile is better with Life Orb or Choice Band. Since Rock and Steel Pokemon tend to be heavy, Low Kick is better over over Brick Break. You can also consider Ice Shard.