My suggestion would be to start from that Ramapo Aid Station #4 and run back to Shephard Lake, then do the Mountain Bike Loop then come back out to Camp Yaw Paw as we do in the start of the race and then back to Ramapo Aid Station.
Just a suggestion. That middle portion from Ramapo back to the start is tough so I'd like to sear that into my muscle memory.
I will be there on Saturday as well, probably around 8:00, I will keep an eye out for you. If you do Ramapo to Shepherd Lake and then down to Skyline and back to Ramapo you are looking at 22 miles or so, and there is water at Shepherd (bathrooms are still open) and at Yaw Paw (in the bathroom behind where the aid station is set up) and you could also ditch some at Skyline. Rick says the course is unchanged this year (although White heading up to the Red Crossover has been diverted and uses switchbacks up the hill rather than the road now).
Google maps tells me the address is 600 Ramapo Valley Road Mahway, NJ 07430. I'm coming from the south, up 287 to exit 58 onto 202 North/Ramapo Valley Road, up about 5 miles to the parking lot on the left.