Rock. Live or Dry?

[Tweeds]

Hey All,

I've been piecing together my perfect tank. I've got a RSM130D and have upgraded some of the equipment. I'm finally ready to set it up. I was going to add the water on Saturday and add some rock. Since it's a brand new set up, should I add live or dry rock? I know it has to cycle before I can do anything with it, I guess I'm wondering if I add some live rock will it all die off and is it just better to invest in dry rock?

Thanks

Tweeds