Dangerous areas to avoid from Costa Rica

[Earl]

For a surfer driving here from the southern end of the Caribbean side of Costa Rica this month or next, which areas, towns, and roadways should be avoided?  I told him that the Acapulco area was dangerous and the inland town of Chilpancingo. Is that correct, and what other town or routes should he avoid?  I told him no traveling at night and don't sleep in his van.  I imagine that he will want to hug the coast searching for good surf breaks.  Getting here by the fastest route will not be his intent.  Also what areas of Central American should be avoided? Thank you for all replies.