>>>Doesn't look too complicated<<<<
It's not at all. The trickiest part is getting from the Flushing Bay Promenade back to civilization. My route (when heading east from NYC) involves riding against traffic for a short distance and negotiating a blind turn in the industrial area adjacent to the promenade. Perhaps you can find a better way around it. Think getting off the promenade near the old bus stops (white, concrete, tent-shaped overhangs) and heading under the highways to Northern Blvd. You'll see what I mean when you look at a satellite view in Google Maps.
Feel free to contact me with any specific questions.