Hi Marion
Welcome to the forum. New jersey ain't California when it comes to growing figs, that's for sure. Even if you are containerizing your trees you will not be able to properly ripen long-season, heat loving, varieties. Concentrate on the short-season fig varieties, and you will do just fine.
Many, many forum members have successfully grown and ripened figs in your climate, and that information can be found in the "Figs for Your Location" thread. Just do a search, or, just ask and the members will tell you what varieties to try. Bill's Figs will probably be the closest source for trees....and, you'll have a better selection. I hear good things about "SULTANE". The best figs are those varieties that will properly ripen in your area.
Good luck and happy growing. Check in, often.
Frank