One of New Jersey’s most scenic and remote restaurants, the Walpack Inn in Sussex County, may soon be on the market. Four members of the family that has owned the iconic restaurant for 75 years, in a famously isolated Sussex County town with less than a dozen residents, have announced plans to seek a buyer. “We are taking our first steps toward retirement and plan to sell the restaurant. We hope you will join us for some great food, drinks and brown bread as we embark on our farewell tour,” they posted to Facebook on July 12. Lara Darco, the Walpack Inn’s manager since 2016, said Monday that t…