That does seem to be the way to go, although frankly if I ever lived in New Jersey I'd be long gone probably. Although I find me living in AZ so I am one to talk.
But if you live anywhere near a border and have a PO box and the ability to buy in sufficient quantities well...
The other thing you could try is a Vape store like, located on a Native Reservation. They are a sovereign country and I have worked for Native Populations here and there and if there is ONE thing they love, it is annoying the USA because they have sovereign nation status. I know there was mention of one moving onto a Reservation but I can't remember where. However, you would be essentially "importing it" from overseas and IDK how often these packages are checked or whatever, but you can call and ask. They are perhaps going to be more willing to ship your way, as they aren't breaking any laws, although depending on how NJ might see it you might.
IDK whatever happens I surely do hope there will be a vape shop on every reservation and although some states like PA geocoded the heck out of their Native Americans so badly they have no reservation although frankly that is ON them. Still I believe vape shops and reservations to be a match made in heaven. Really.
Anna