No jail time (this isn't Virginia), you may not even need a lawyer, when you go to court they will plea it down to "unsafe driving", which is a higher fine. But NJ insurers know this and will still jack up your next rate, they view the known unsafe driving plea as the equivalent of a 4 point ticket.

Invest in a good radar detector along with running Waze when you want to speed, if you have deeper pockets you can invest in a laser/lidar jammer system but probably not worth it unless you do a lot of parkway or turnpike driving.