In my state, there are RN programs that I believe allow you to test to see what you'll need as a prerequisite. If I were you, I would contact that local community college and ask questions. The other thing is you must do clinicals, but I wonder if you could do like part-time transcription and go to school at the same time? I would look into it if I were you. I think you'll be surprised with your transcription experience that amount of knowledge you have with anatomy. Good luck to you!
[ Some beach somewhere, there is a big umbrella casting shade over an empty chair...I picture myself right there! ]