You can also do what I did which was to go from JFK in NY. I took the Frum Lakewood bus to Brooklyn which is app. $16 (I forgot the exact amount) and then a Frum car service to JFK. There are also goyish car services which are cheaper. I forget the amounts offhand – I think the goyish one was $25 or $30 and the Frum one was $50. I can try to find out for you and get you the numbers as well if you are interested. Either way, it’s much cheaper than a car service to Newark.
The total shouldn’t be more than app. $46. And it’s easier to get flights from JFK anyhow.
If you can’t afford to do it that way,the NJ transit isn’t terrible if you’re used to goyish transportation. I prefer to avoid it, so I would rather go a roundabout way and pay a bit more. For me, I feel it’s an issue of “yesh derech achrita”. One should always avoid an inappropriate atmosphere if possible. And I don’t mind going through Brooklyn and paying a bit more. The busride is very comfortable and relaxing.