What do mean by become a pro? Do you want to teach, compete, both? I think you need to clarify your goals and after 5 years of training you should start thinking about taking take your exams. However, you can teach without any formal papers and many 'pros' do. Do you have a partner? Most pros compete at some point in their career and to do that you need to practice and learn with a partner. Have you ever competed as an amateur? Every pro I know started as an amateur and worked their way up through the levels.