ZimBizee: ignore DK, he is a freak of aviation nature. He defies the laws of medicine and physics!
Normally your mate should be fine. His 'clients' would probably prefer the maturer CPL professional
BUT he has to get to that professional stage first!
And to do that he has to remember a basic rule of thumb - it's going to cost him a significant sum of money and (based on statistics) he will not see a decent return on his investment for many many years - if at all.
If he is doing it as a vocation - fill yer boots. If he wants to support a wife and 2 kids - forget it