You should begin buying PSA when you feel sure that you can guide them. That can happen in one week or in one month. But if you can afford it, begin buying PSA as soon as possible. Only this way your business will move to another, better level. And be sure when you buy PSA, you're a good example for them. That means you're EA or BTL every month and have some strategies you can share. That is the work you should do.
