doghead (love that name) - even though I would like to be very encouraging, I have always been of the school that says if you have reservations and second thoughts about moving up, those feelings in of themselves may indicate you are not ready. Much of the preparation for doing higher levels is mental. If you are totally convinced you will be hesitant or "weak" doing those games, then that's the tip off that you probably are not ready anyway.
I'm not trying to scare you off, because a certain level of nervousness is normal and to be expected (except by someone as egocentric as myself
). If you want to overcome these feelings, which you must do to move up, think of the opportunity as a challenge to yourself to overcome any fear. Once you understand you must face challenges like this to become successful, it becomes easier. If you're not willing to challenge yourself, you may never move up. It's really up to you to "take a stand" with yourself.
I wish you the best.