Oh yeah, I get that, but isn't it nice to have some hardy fish in the beginning to get the ammonia levels up a little (for the time being) and for bacteria to acclimate? As I've been told and read, just live rock doesn't completely cover the cycling process.
On another note, I ordered my tank last week (they were out of the dimensions I wanted at the LFS), so it should be arriving soon. As for the actual cycling time with the live rock and everything: I did a month for my established, 2 1/2 year old FOWLR. What would be appropriate length for this one? Same amount?