Actually you can do the canal itself in 5 days but it generally takes a day to get your mast down and most of a day to get it back up. The canal is a very nice trip even motoring with your mast on the boat. Then two days down the Hudson to NYC and I guess you are home.
You can easily make Huron to Erie in two days and depending on how hard you push 2-3 days to across Erie. Then you are near Buffalo where you take your mast down and enter the canal.
PM me if you need additional info or maybe an experienced crew to help out.