To the OP,
I had been struggling with this idea for a while. I graduated with a BS in Exercise Physiology, but needed to finish up the pre-reqs. I've been working full time as a phlebotomist and lab tech, and wanted to do more. I also felt frustrated that an associates degree could earn me almost three times as much as my bachelor's. There are many community colleges that offer 2-year nursing programs here. I put the premed idea on hold and started taking prereqs for nursing.
In the process, I become a CNA and patient care tech (advanced CNA skills). I started working in nursing homes, large teaching hospitals, and a Level I trauma center as a tech/CNA. I've also taken courses in healthcare and medical terminology, all designed for prenursing students. I work alongside docs and nurses every day. This shift from premed to prenursing has been very eye-opening.
When people say there is a difference between the philosophy and daily duties of nurses and doctors, I have to agree. Both groups are highly involved in medicine and - although many areas overlap - there is a difference. Seeing these differences solidified my desire to become a physician.
Secondly, nursing school is no piece of cake. There are many, many intense classes on medication administration and nursing care plans (areas that are not as emphasized in medical school) and the clinical hours can make it extremely difficult to work full time. This isn't such a big deal if you're dream has always been to be a nurse. But if this is just a 'back-up plan' it's a lot of work to go through.
In addition, after school ends, there is the orientation and learning process of becoming a nurse. It would seem that many new grads need at least 6 months to a year before they actually feel completely confident in an area. Some areas of nursing (like ER and ICU), may even require a year of full time med/surg experience before one can start on those units. While getting your bearings as a new grad, premed classes may be out of the question. This - with school - can push back the process anywhere from 2-3 years. That could be a full fellowship after residency, or a $200,000-$400,000 (depending on your chosen area as a doc) of earning potential lost, because you went to nursing school.
Sorry for the long post, but it seems to me that I would be better off focusing all of my energy on medical school now. If I don't get in, then I may consider nursing. If you want some more experience, become an ER tech/phlebotomist/CNA. PM me if you have any questions, I think that we have a lot in common. Good luck with whatever decision you make!
CrazyPremed