I kind of agree with wilco on this one.
If you struggle with your exams it will definitely help to wait and get some practical flying experience first, but if you find studying theory easy I don't see any issue in getting the silly exams out of the way.
I dont' think I would be a worse pilot even if I hadn't done any of the exams. To be able to fly I need to know the rules of the air, navigation, communication and met. This knowledge will not be there just because you passed the exams.
What says that wilco is not going to learn how to navigate after he has passed his nav exam? I still read books and articles about navigation 2 years after passing my nav exam.