FWIW, CDW is technically closer than Linden, but there is public transit available near both that can get you to/from the complex. I am not 100% sure, but there may be bus service right near CDW, possibly with a stop at the complex on the way to NYC.
Catching a bus or train from LDJ involves a longish walk or a cab, but that will also get you to the Meadowlands, via Newark Penn Station and then the transfer station in Secaucus.
Whatever the case, even from TEB, if you plan to use public transit, you'll have get a bus either from NY Penn or Secaucus... although I believe there is sometimes direct rail service, when there are big events at Giants Stadium (your concert may qualify?).
The bus/train may seem like a hassle, but trying to get there before a big event in a cab or rental car would not be any more pleasant, or even faster.
Definitely check the NJ Transit website...