This is not a feasible plan. Why would you take the sciences at the nursing level, and simultaneously take them at the pre-med level? Plus nursing school has clinical practicals, which I don’t think would leave you time to fit in the 10 semesters of basic science class plus lab that are required. On the other hand, I do think that someone who has a BSN in nursing and work experience as a nurse, who then does a post-bac/premed program, does well in it, and gets a high MCAT score, would be an attractive candidate for med schools, because of their proven interest in medicine.