You're lucky, going by the LP map, you have several yellow sites within an hours drive. You also have a few green zones less than 2 hours away. I have to drive 3.5 hours to hit green - but it's worth it. I don't do it often as I have a yellow zone just 50 minutes away.
I,like you, live on a red/white border about 40 miles from Philly. I can't see anything in my north and west skies up to about 60 - 70 degrees from the horizon. The south is ok but much of the sky is blocked by trees and houses and porch lights. I usually observe either at an orange zone (20 minute ride, or a yellow zone (50 minute ride). It looks like your options are:

1. Move
2. Drive to a local dark site
3. Quit astronomy
4. Suffer at your present location

Don