Welcome aboard if I've missed you. I cannot give you any recent information BUT historically, the Erie Canal is fairly dependent on water levels. Not too little water, too much. I expect the most direct route will be out the Chesapeake, turn to port (left) to NYC, (there may be canals along this route but I am unaware of them, so I suspect you may be running outside) turn to port (left) and thence up the Hudson to the Federal dam/locks in Troy, NY. Keep in mind, the Hudson is tidal up to this point (Troy) and your SOG will be affected.