My only concern is that when you're in nursing, would you really want to/have the time and energy to devote to applying to MD/going through it? Nursing is by no means easy, especially if they put you on night shift. I would give serious thought to pursuing a career like nursing in order to make yourself more appealing to Medical School. There are other choices that are less demanding in healthcare that can highlight your dedication to healthcare.
Also take into consideration how you're going to answer the questions the OP put up before you. You will definitely have a leg up on a majority of applicants in terms of EC/jobs. But will it be worth it? I have seen Pharmacists, Nurses, PAs, and PhD's going into Medicine, so I know that it can be done. Just realize that you're adding 2+ years of education you could put to better use in other forms of education if your academic record is a concern (MSTP's for one).
If you really want to do nursing, try to just go through the Kaplan routine. You'll be hated by RN's, but you'll be a nurse too, so it doesn't matter.
Also, if they catch wind of your true desire to go into Medicine, you can have one of the most excrutiatingly annoying final years of rotation in nursing.