I'm so sorry you're dealing with this dreaded disease. Children make it an even more difficult situation. You sound like you have a plan for you. That's wonderful.
My A son has had so many jobs....he's quit so many jobs. He would usually start to make a lot of noise about how awful the job is and how everyone there is stupid, etc. My guess is that his employer would usually see the behaviors associated with alcoholism and begin to discipline him. My son would see the writing on the wall (that he was heading toward being fired) and he would quit before they fired him. That's how he would protect himself and the addiction. It was always someone else's fault.
gentle hugs to you and your boys.