The NJSP is on the 800 MHz Motorola system, which is the older analog system. The only site you need to scan for that system is B11D-011 "North Simulcast". You will not receive any other site, nor do you need to.
The NJ 700 MHz system is the P25 Phase II system. Some talkgroups are still FDMA, although most are TDMA so you need a Phase II scanner to get the most from that system. There are two sites in Sussex County for that system: High Point (26) and Walpack (27), both of which are receivable from your area in Pike County. There's not a whole lot of traffic on either site, and the talkgroups won't necessarily be heard on both site. It depends on what radios are affiliated with what talkgroups on which sites.