Sandstorm Team - Help Needed!

[Kuro]

Okay, so I've got a preliminary plan of a Sanstorm team, but I'm rather unhappy with it. Basically, I think I've confined myself to a specific type of Pokemon (AKA those that resist Sandstorm), and the problem is I cannot figure out what to replace hinderances with, and what I could replace them with.

Chouza (Hippowdon) @ Smooth Rock
252 Atk/24 HP/234 Def
Impish

- Earthquake
- Ice Fang
- Slack Off
- Yawn

--

Envy (Swampert) @ Leftovers
252 HP/180 Def/88 SD
Careful

- Earthquake
- Waterfall
- Avalanche
- Curse

--

Alloy (Skarmory) @ Leftovers
252 HP/252 Def/6 Attack (>_>)
Impish

- Brave Bird
- Spikes
- Roar
- Roost

--

Sanshou (Garchomp) @ Choice Band
252 Attack/252 Speed/ 6 HP
Jolly

- Earthquake
- Stone Edge
- Dragon Claw
- Fire Fang

--

Nova (Lucario) @ Choice Specs
252 SA/252 Speed/6 HP
Modest

- Aura Sphere
- Dragon Pulse
- Flash Cannon
- Dark Pulse

--

Tiki (Bronzong) @ Leftovers
252 HP/104 SD/152 Atk
Sassy

- Earthquake
- Gyro Ball
- Stealth Rock
- Hypnosis

--

Okay then, that's the basic outline. I've thinking of getting a better (and more type-diverse) special attacker, or just removing a Pokemon altogether for a special sweeper/tank.

Basically, the three that I'd consider replacing are Lucario, Bronzong and Skarmory.

Any help would be greatly appreciated. Thank you. ^_^;