Go for it! My sister is a Director of Nursing in a large teaching hospital and she made a career change from speach therapy to nursing and has never regreted it. She makes very good money for a single female. A friend of hers just graduated from nursing school last year and I went to the pinning ceremony. What I found interesting, many of the people in the class were not young people but many were starting their second career. Nursing is a hard program and I think they like ones who have already been in other fields and are mature.
Is there a way you can continue to work and go to school at the same time? I know it is a very tough schedule once you get further into the program.