Do the med-surg. I worked as a psych tech for many years before becoming a nurse. I am also older (48 when I graduated). I returned to psych right out of school and I'm now looking to do some med-surg for the experience. I love psych and will never ,at this point in my life, go into medical nursing, but please trust me, the knowledge you will gain in med-surg will benefit you greatly. If you are still a student then you surely understand that "nurses eat their young". As a new grad, it is expected that you need to learn and gain experience so it will be much easier for you right out of school. If you wait, there is much less tolerance for your medical inexperience(of course, I would love to see a medical nurse take over on a psych unit).It takes great patience and understanding to be a psych nurse, and good ones are desperetly needed. Good luck to you!