
An exercise that'll make a huge difference when riding is the s-turn in a confined area. Enter a rectangle at the opposite end to where you start, u-turn to your left and then yo your right and head the direction you originally started in without crossing the line of the box. If your friend has the training you mentioned he'll know the dimensions of the box.
This teaches three things: Clutch control as you ride at slow speeds, manuevering at slow speeds and learning to keep your head at a 90 degree angle while you look where you're going instead of at the road (which leads to much wider curves).
What you'll gain from the course that you can't get now is another set of instructors eyes. Often I saw my guys consult with each other and both gave the same advice but in different ways. Also I found the Q& A sessions in the classroom section when we discussed different learning points invaluable with my classmates adding perspectives I wouldn't have thought about.
Nice to see the effort though....you'll love the course!