Increasing your clinical experience and shadowing should be top priority right now. The rest of your activities are excellent and your theme of mental health/psychiatry is cohesive. But just be careful working that into the personal statement; you want to talk about medicine in general as well, and not seem like a one trick pony, which is why getting as much clinical experience as possible is good.
If you get a good MCAT, and you will have a good shot.