Pokemon White Team Help

[Heart Gold]

Hi, here is the team I am planning and I need some help finding weaknesses and things I should replace. I was thinking of getting a Scrafty, don't know who to add. Any suggestions who I should replace. I don't care about EVs right now. I'll add those in later. I also chose Serperior as my starter if you think I should incorporate that anywhere.

Criticism will be happily accepted.

Elektross (Brave)
Levitate
-Flamethrower
-Thunderbolt
-Thunder Wave
-Crunch

Excadrill (Jolly)
Sand Rush
-Earthquake
-Rock Slide
-Swords Dance
-X-Scissor

Chandelure (Modest)
Flash Fire/Flame Body (Not sure which is best.)
-Flamethrower
-Energy Ball
-Shadow Ball
-Psychic

Carracosta
- I need help with Carracosta, I want to run a physical attacking set and I'm not sure what to do with nature, moves. I want to do Shell Smash over Curse. Also should it use Ice Beam? Help please!

Reuniclus (Modest)
Magic Guard
-Psychic
-Recover
-Thunderbolt
-Calm Mind or Shadow Ball

Haxorus (Adamant)
Mold Breaker
-Dragon Dance
-Dragon Claw
-Earthquake
-Rock Slide/Shadow Claw

Thanks!

Edit: I updated this team to a better version.

 

[Hikamaru]

I recommend this site: *link removed*

Go to his Team Builder and it will help you find major weaknesses in your team so that you know what to rotate.

 

[Heart Gold]

Ok thanks, I've changed my team a lot since this post so it is outdated.