Pokemon Championships help

I'm going to enter the 2012 UK Championships, and I would like some help on selecting my team.
So far I have:
Jeliccent, Tyrnaitar, Elektross, Conkeldurr, Excadrill, Haxorus.
I'm generally going for the sandstorm approach.
I'd like info on items, moves, strategies and any changes in general.

Thanks ^^

Posting some movesets will help us help you ^^

We require you to post moves, natures, EVs, abilities, and items. Since you seem to be new, this link might help you (with EVs especially, if you don't what they are). Keep in mind that some of the info in that link is directed towards standard play, and not VGC. Additionally, here are some recommended movesets for VGC 2012 to get you started. If you can't find a certain Pokémon on there, you can check here; just remember that the movesets there won't be VGC strategies. I'll leave this open if you edit in your movesets. Good luck.