Hi, I'm Samwise. Returning to Backpacking after MANY years. NJ AT section 1 and 2

#1

Hi,
I’m Sam and I’m just returning to backpacking after a 20 years. I’m glad I found this community. I am planning on section hiking on the NJ AT. I want to start MIDWAY through section 1 down to the end of section 2. I would do the whole section 1 down to Pochuck shelter, but that about 15 miles and without trail legs (and I’m 63), that would be pushing too much. So, I figured if I start midway don section one, it’s only about 10 miles to the section 2 shelter. The NY/NY AT book says there is a trailhead at Gemmer Road in Wantage, but I can’t seem to find it on a map.
Any suggestions are greatly appreciated!
PS
Is it true, you can’t even filter water along section 2?