If all you want is a "Master Diver" card why not get one from your local SSI shop? SSI will accept PADI courses and you only need four specialties so you are half way there already. You can do the specialties witha DiveCon instead of an instructor and the dives can be done with your dive buddy. You just show a SSI instructor your dive log and computer, pay the fee, write the test and you are done another specialty.