From Chicago to New York you could go the Erie Canal to the Hudson River
instead of St. Lawrence Waterway. There is a lot of info on the Great Loop website. You would have to unstep your mast until Troy, NY. You would go by West Point, Governors Island, Statue of Liberty, and the Verrazano Bridge before having to go out into New York Harbor. A most beautiful trip. From New York Harbor is open ocean until Barnegat Inlet, where you could take the ICW. Or you could stay outside until Cape May, New Jersey. Good luck.