My 2 cents...DM is a great course. Its focused on teaching but you can still learn about diving in much more detail, and you'll be a better diver for it. But there's no substitute for the experience you get from actual diving. So if you want to work as a DM you will benefit from as much diving as you can possibly do. (Also, everyone thinks their amount of experience is the bare minimum required to be competent. If you have 50 dives, you can't imagine someone with 10 dives doing the AOW required dives. If you have 100 dives, you cant imagine a DM wth 50 dives knows anything. If you have 500 dives, someone with 100 is a newbie...) Take the DM course when it fits your schedule/budget but dive as much as you can