Regarding your performance potential with the trading method, this really is tough question to answer. What is being taught is a discretionary trading method. There are so many variables with trading that it is simply not reasonable to give a percentage return expectation. To do so would be irresponsible on our part. Aside from a student's ability to absorb and apply the training, other factors have to do with risk aversion, sessions traded, trading goals, etc.
No matter how high or how low of a number is given for potential return, it will be too high or too low depending on who you are speaking with.
I know that is not the answer you are looking for, but it really is the most honest and straight forward response I can give you.
My suggestion would be to complete the training and begin practice/demo trading. Look at how many trading opportunities you have during the time that you trade and then track your results over a few months of demo trading. From here, you can use the information to develop realistic goals for 1st year, 2nd year, etc returns as you create your trading business plan. This way, you will have potential results that are based on your own risk tolerance, trading time, and demo trading results.