Wow... NJ is lenient on DWI, isn't it? AZ requires a mandatory 45 day jail term for a BAC over 0.20, even for a first time. Judge cannot waive it and you cannot substitute it with classes or anything. In Virginia anything over an 0.20 is a mandatory 10 days.
I received my first (and only) DUI in Virginia for an 0.064 and moved out of state before the court date for work. I had to fly back to court; there were no other options offered, period. In addition to this, I had to pay for Virginia's DUI classes to satisfy the judgement, and all their class did was send me to a DUI class in my home state, which I had to pay in full as well.
If you move before your court date, you should be able to get a license in your new state since you haven't been convicted yet. If/when your old state notifies your new state of the conviction, you may lose your license there.
As I have learned here and through other sources, you will need to have your NJ license reinstated at some point, or else your new license won't be any good either (the state will suspend it when they learn of the original suspension). That means jumping through whatever hoops NJ gives you.
I was required to appear in court twice -- once at my "how do you plead" hearing and once at my actual trial with my lawyer. However, I had to appear in between those two cases as well, as my warrant specifically stated that I could not leave the state. I had to have a bond modification hearing to allow me to leave (to move). They did not want to modify my bond without knowing what my new address would be, so if you have to do that, be prepared with that information.
In addition, based on what I'm reading, typically NJ can set up to 30 days jail time for a first offense and the judge can waive whatever he wants as a probationary "don't do anything bad" period. With a BAC that high, I honestly would not be surprised if you are required to do at least some jail time. You say there was an accident involved which makes it that much worse based on everything I see in my search.
Good luck.