I've taken my bike through a bunch of this place, and so I know it will never be a major destination. It's like a mini-Allaire, minus all the years of hard work folks have put in down there maintaining the trail network. I'd say if you wanted a quick hit it would be good if you live close enough. I haven't ever been to Cheesequake, so I can't compare it other than to say there's no charge to park at Capik
I talked to the land manager, and he told me the park is 500 acres. I can't tell you which 500 acres belong to the park, because there is more open space than that out there. Here's a google maps satellite shot of the area (hopefully you'll be able to see it):
Google Maps Satellite shot.