What banks in northern NJ offer a 5 or 7 year fixed year mortgage?

First find out what banks are in northern NJ. Second call them or stop in to their branches to ask about the mortgage plans they offer. Asking them is the only way you're going to find this out. They will tell you, they won't bite...they want your business but first you need to take the initiative to find out who the lenders are-then ask them!