Alex, My bet is that your biggest problem will be with the Government and the Enviro wheenies....... You will probably spent more in legal fees than you will on the excavator.  Don't forget the Army Corps of Engineers. They may want to have some fun with you after the locals get finished with you. I live on Eastern Long Island, not far from you as the crow flies... I ended up buying a Catfish Farm in Alabama to be able to do what I wanted. Good luck.