Have you thought about the Eastern Panhandle of West Va? You could spit and hit Md, Va, Pa and DC.
This is where I lived for about 3 years and loved it. Look near the intersection of I81 and I70. Hagerstown MD area.
Carlisle is just an hour up 81 North. I flew out of Regan a lot in downtown DC. BWI and Dulles also. All took a little over an hour depending on traffic.
Mason Dixon is right here near Boonsboro.
We lived near a small town called Falling Waters in WV. I have considered moving back there when I retire.
