By JEREMY EGNER As pop culture pilgrimages go, you could do worse than a jaunt to rural Maine to visit Stephen King. The author, as synonymous with the state as lobster or whoopie pies, lives with his wife, Tabitha, in Lovell, a pretty town near the New Hampshire border. A building nearby, on a hill overlooking rolling foothills and a glacial lake, holds both his writing office and a kind of King museum. Drive down dipping, pine-lined lanes, make a left past the sign warning you to “Watch for…