I did similar trip in two days in July. Stayed at Crescent City Yacht Club, between locks 7 and 6. Next morning, down Waterford flight and Hudson to Kingston, Rondout Creek. Second day Kingston to Jersey City. This was at a max speed of 7 mph on starboard engine alone, as port transmission had failed. Trip is in the 150 mile range, so figure on 75 miles per day. Speed limit on east end of Erie Canal will keep you slow, but you can make up time on the Hudson if you are capable of a better speed than I was. At my speed these were 11 to 12 hour days to cover the distance required. Adjust these times for your cruising endurance and your boat's capabilities.
Safe and Happy Boating!
ColonyCove