Pre-med will have heightened competition due to students trying for scarce A grades on the curve in pre-med courses.
Check the residency-for-tuition-purposes rules in both NJ and NC for both undergraduate and medical school at the state universities, so that you know the full implications of the move the NC on your options for undergraduate and medical school. (If you can get NC residency for medical school, note that some of its public medical schools are relatively inexpensive for medical school.)