I thought I could add something and then I remembered that if ....
I did the Stress and Rescue with SSI, it was without a doubt a coursw I would repeat as many times as possible. Both as rescue guy and victim guy. I met one of my best dive friend ever when I took the class and got to be victim when his wife did the course, and in another few weeks I will be playing victim again. You will learn some good lessons that are worth being reinforced.
We have a pool session before going to the open water. I typically do very awkward things in the pool, plastic snakes are a great and wonderful thing.
( I would not pull the same stunt in the open water, but for the most part students will approach me with much more caution because of what I do in the pool.)
It is, in my opinion, the best course.
Enjoy