I'm new here so I'm not sure this is the proper forum for this or not. If not, please move it.

Anyway, my local GW store is having a special event this July 4th. Basically, it's all of the employees vs. 20 customers in a huge brawl. Every customer is allowed to bring a 1000 point army so basically it's a 20000 pt vs. 20000 pt battle. I, of course, will be bringing 1000 points of space marines. I just need suggestions on what to bring.

We'll be using CoD rules and I want something that will pack some firepower and will allow me to last past the first few turns of the battle.

Thanks for your help...