So I'm training a BD pet for the first time and I need some advice.

Right now I'm at 4 codestones / course and I've seen on a few guides that there comes a point when it makes more sense to train up to level 250 and start paying 1 red codestone / course. They don't really say what the point is though. One guide I've found ((you need an account to see links)) recommends waiting until you're at 7 codestones / course.

Does anyone have an opinion on this?