Get the JORBA (mountain biking site) to navigate this park... there are a lot of unmarked trails that are listed on a topo map they have up on there.
Also, If the summit of a mountain is the highest point, or peak, then the coordinates for this summit are off. the coordinates listed on here are at an elevation of 1222. The highest point is actually 530 feet away (at 54 degrees from the coordinates listed here). So, the way I see it, the actual summit of Allamuchy North is at 40 56.218'N, 74 46.291'W. The elevation there is 1231 feet. I confirmed this both on the Garmin that i was using, and on Google Earth when i got home.