Graham,
As an intermediate student, I can very much remember my first few track experiences and appreciate a writeup like yours. I believe the way you attacked your first school was very positive, wise, and safe. Most people don't go on track the first time with a Z06, and I think you did it the right way.
As for those considering your first school, many valid points have been raised here. Regardless of whether your car is paid for, worth $3K or $33K, you have to be comfortable with the decision to take the car on track. Don't confuse being comfortable with your decision with the butterflies before your first event. It's still a huge rush for me after 3 years of events. Those who know me well will tell you I'm a pretty cautious person, and the fact that I do HPDEs is kind of an odd fit. I prefer to look at it another way: If the pseudo cautious/nervous guy can go on track, anyone can.
