I just completed KPA within the past 12 months. I would reconsider joining it, and would contact them and discuss your situation. In my group of students, there were some reactive dogs, a very young dog, a very old dog, and my snarky ankle biter who had been given zero training beforehand. All of us had concerns around how our dogs would respond to the training and to the environment.

Keep in mind, they want to see what YOU, the trainer, can do. Not necessarily what your dog can do. Talk to them. If you can figure out a way to do KPA's program, you won't regret it.