I also deal with pretty severe anxiety and depression, and would use booze to cope. Once the benzos came into play, it turned a nightmare into a living hell. It's a pretty much guaranteed massive panic attack after drinking, not to mention you can literally die from mixing booze and benzos.
I can tell you from stopping the drinking and dropped my benzo use down to only "as needed", I went from near daily, crippling panic attacks, to having them come on only once in a great while.
We all have a million excuses why not to stop, but getting yourself into treatment before it's too late would be likely the best choice you ever make.