Hi Brett, apologies for the late reply. Unfortunately, the DEV02 course is going through a major redesign to focus on real world scenarios and best practices, similar to what we did with DEV01. We expect the course to be ready by the end of the year, however, we will be rolling out smaller parts of the course earlier than that. Please make sure to keep an eye on my blog here, where I will post every time a new course comes out.
Regarding your lingering questions - have you considered Kentico consulting? Our consultants could tailor a custom training to answer those on top of an overall advanced development training.