It is Your Money
We don't all wear the same shoe size, or have the same hobbies, so why should we all use the same trading strategy and risk management techniques? The truth is that we shouldn't. My perception of what constitutes reasonable timing of entry, and how much money and emotion to risk on a particular trade, is likely far different than yours. Commodity trading is an ambiguous game; there isn't a right or wrong answer to most aspects of speculation. For example, the same trading "ingredients" may work for one person but not for another due to differences in experience, education, risk capital and emotional constraint.
Only you will be able to determine what works for you; discovering what that is requires patience, discipline, and an open mind. The most important feedback on your progress will be your commodity account statements. This isn't to say that you should hang up your trading jacket if you experience a drawdown, or even a complete account blow up, but it is important that you are realistic. Some people tend to only remember the good trades and others only remember the bad. Each of these distorted perceptions of reality can have an adverse effect on your commodity trading. Successful traders remember the good trades and the bad trades, but most importantly learn from all of them.