As far as I am aware Pandaren dig sites don't become accessible until 525 in Archaeology.
Your best shot at skillups should be in Cataclysm digsites but from what I've been able to find out it seems that the gap between 500 and 525 should be a little easier with an upcoming hotfix.
I'll rejoice when the hotfix is actually live. Each day I lose rep with Cloud Serpents because I can't do the arch daily is bad news.
I don't even care anymore. I'm just waiting for the damn Darkmoon Faire next week so I can get my five points and finally be able to dig in Pandaria.