You is you and Me is me, but personally I would never invest the kind of money you are talking about and then drive it on any beach. See the previously posted pics for worst case but to me all cases of vehicles and salty sand and salty air and salty water are taboo.  I have seen many vehicles rot away over the years when living near the ocean.  Sure, you can clean it, but you can clean your teeth too, but still pay the dentist office for professional cleaning and any vehicle on the beach will need professional cleaning often IMHO.