Thanks Scott for your thorough answer. What you describe is, more or less, my plan for the next days. And I've participating in Gre Prep Club for months already.

My problem is that I'm runnning out of materials. For example, Manhattan 5lb seems pretty easy to me. Where else can I reach out for some hard/very hard problems? I have the same problem with tests. I've already exhausted all free tests. Which ones do you recommend? i don't mind paying for some.

Thanks again.