To get to the house where Stephen and Megan Scheibner live with their seven children, you skirt past Allentown, Pa., and drive for another half-hour into the hills above the Lehigh Valley. The Scheibner place is on Blue Mountain Road, a few miles past a forlorn establishment called Binnie's Hot Dogs and Family Food. Standing behind their white clapboard farmhouse, where the backyard unfurls over… more