If you don't need to work immediately, then I suggest petitioning to take the CNA certification exam after you finish the first semester of nursing school. Some hospitals may be willing to consider nursing students for their CNA/PCT positions, even for per diem. A former classmate and I were both working per diem at hospitals while in school, and we are blessed to be hired as RNs now for our respective hospitals. Also, continue to volunteer at the hospital because it will not only help you establish connections, but will also demonstrate your commitment to the hospital/organization to any possible hiring managers.
Good luck with your decision!