Arrive SH airport, cruise to Nagasaki, back to Pudong seaport, a trip to Beijing, and back to SH

Hi Mr. Mrs. Miss

We plan to fly to Shanghai from Jakarta, on Dec 2017
Our itinerary ( Australia passport )
- arrive Shanghai airport, apply for 144 hrs free transit
- leave Baoshan seaport, cruise to Nagasaki for 5 days
- back to Baoshan seaport, apply for another 144 hrs free transit
- visit to Beijing for 3 or 4 days and fly off Beijing, or back to Shanghai and fly off Shanghai

Is it possible?
Thank you very much