So basically:
1. Train driving and handling until they're somewhat higher than primary skills. This is so that when you train primaries, they get trained faster. When you see that training slows down noticeably, progress to step 2.
2. Train shooting and defense until they're about even with secondaries in order to train them as quickly as possible.
3. Repeat steps 1. and 2. until the player reaches his prime.
Is this correct?