It's not bad advice. However, keep in mind that there are 50+ tests available. There is not a shortage of games to practice with.
Also keep in mind that there are many games that have minimal set-ups to them. Whether or not you come up with the 'optimal' set-up, you need to practice applying what you do come up with to the questions to get to the filling in the right bubbles part.
You can add deductions to your set-up that you realize when you tackle the questions. You have to find the right balance. Even with the 'perfect' set-up and deductions there are questions that you need to extrapolate from the set-up to solve.