The chances of getting hired by the NJSP in the next five years is slim to none. Hirring is at a stand still and the applicant pool is overloaded. Even if they open it up, you are so far back in line the odds are not worth taking.
Additionally, there are not that many career options within as you think. In fact, ignore the recruiter lines and look who is standing on the median of the NJTP and GSP......many have plenty of gray hair. I am sure they are still selling the "We have 120 units" line. I have seven close friends, all with 7 to 10 years in. Guess how many have made it off the road and into a special unit? Two....one in commercial enforcement at the weigh stations and one on the governors detail who will openly admit she got in because it was a slot set for a "woman." The rest continue to hammer the highway for tickets or do accident reconstruction. Morale is low. Its not the great agency it was five years ago. Will it go back? Probable....but not for a while.
NJSP is not a good option right now. I would look around and have a few more eggs in your basket.
-In God we trust. All others, put your hands on the car and don't move.