No one can predict with 100% accuracy what you will experience. That's about 30mg klonopin at least, and 40mg at most, so about 35mg klonopin. I would definitely think that much klonopin would cause some sort of withdrawal, even if used for only ten days. Also, your earlier abuse will have an additive dependency aspect.
Using alcohol will not make things any easier for you, especially combining it with klonopin. You're making the eventual withdrawal that much worse.
Have you honestly given CBT a fighting chance? It's supposed to be really helpful for anxiety. To say it doesn't work for you and at the same time shoot yourself in the foot by drinking alcohol makes me think that you don't want to put in the hard, necessary if painful, work towards getting at the core of your anxiety. This may sound rude, but I hope you understand that there is no easy fix for our problems. And there is always someone who is worse off than yourself.