DIVE MASTER, My advice would be to take your Rescue Diver first and let it all soak in, get comfortable with being a Rescue Diver. If you are around Dive Masters and Instructors watch them, see how they conduct themselves, choose a good role model
and get to know that person, have them explain to you what is really expected from a Dive Master and ask him or her to evaluate your skills before going any further, you can always find areas that need improving. You only need 60 OW dives under your belt to become a Dive Master but trust me the more experience you have the more valuable you are. I hope that my advice is of some help to you, Take care and good luck in your quest to become a Dive Master, in my opinion they are invaluable.
Southwood.