What if you took alcohol out of the equation and just looked at his behavior without the "excuse" of him being drunk. He is inconsiderate, verbally and emotionally abusive. And this is three months in. The honeymoon phase when people are on their best behavior, wooing you.
You're also thinking of moving in with him in after three months of dating in the hopes of curbing his drinking because you feel his friends are a bad influence.
He is an adult. If he wanted to stop doing any of the things he is doing, he would. If he was really sorry for his behavior, you wouldn't repeatedly be seeing the same behavior. He is just fine with everything he is doing. You've made so many empty threats to leave him if he doesn't shape up that your words to him are just as meaningless as his apologies are to you.
You can't fix him or save him or change him. If this isn't how you want to spend your life, then there's nothing wrong with moving on.