Usually I do the same and then it is quite hard to get 300% attributes, I agree. Only with certain skills, if you get the right order.
But like I said, it's not really needed. I only train skills over 200% to keep them there for a few season and not having to train them again. Sometimes skills drop on a player and you can't train them up again, like aggression on a DL/DR. So you are better to raise it quite high in the beginning.