I was headed to P. Escondido several years ago and was tempted to take this Ayutla route to the coast from Chilpancingo. When I inquired about it I was strongly discouraged from taking it. "Muy lejos, y falta de vigilancia" they said. I took their word for it. Guerrero state has always been a bit sketchy up in the remote mountains. Sounds like a good place to avoid.