The short answer is.... you plan can and would work. Don't worry to much about getting a place all organised before you get here, there will be plenty of time for that.
I really not sure why you are so concerned about safety???? I have lived in Europe, Africa, Australia, PNG and the U.S and I would have to say this is one of the most safe towns on the planet. No problem with my missus out in Wan Chai with her Girls at 4am!