Have you heard about this...
The Drone Services UTM Platform for U-Space and beyond | Altitude Angel.
I joined last year. You join, fill out a form where and the time you'll be flying. They will send you an email or text when an airplane is about to be in your vicinity. They will notify you as to where the plane is now, when it will be expected in your vicinity, and the altitude of the plane.
I also live about 10 miles from PHL, and right under a glide path. All the planes in my area are at about 1800 to 2400 feet. They were also planning to put up detailed maps, showing high tension lines, and other obstacles. Haven't been there in awhile so I don't know if that has actually occurred.