First rule of investing, don't ever invest money you can't afford to lose. Dependence on the money you invest will negatively affect your portfolio choices. Even if you're not making your investment decisions, you need to be financially stable even if you lose all your money (there always is that possibility and it needs to be accepted before you invest).

Secondly, risk is assessed by the companies you invest in, not your decisions. Like plv stated, it doesn't mean that he isn't making risky decisions in a low risk pool.