I would say that you could go either way and be fine. I actually think that going into the workplace as soon as possible has a lot of advantages. I didn't even know what I really wanted to go with my life until I started working. It was only when I started to work that I understood how I could play a role in a business and how I could use my skills to add value. I even learned about what I could do by others seeing my talents. You can always go back to school later to earn additional education. And when you are working, you may get the benefit of your employer helping to pay for school.
Go the extra two years and get your bachelors. A lot of facilities do not hire associate degree prepared nurses and you do not want to limit yourself. Get a bachelors degree and make yourself more well rounded and marketable. Good luck in your future career goals!!