All of what you are explaining are very common indicators of alcohol abuse.
These as you well know are MAJOR warning signs.
Given your past experiences, understand this will certainly get worse with time, (alcoholism is a progressive disease). My advice would be that if you are interested in sticking through with this relationship, I would have a serious sit down discussion with him (While he is sober and not hung over etc.) And lay it all down on the table that in order for the relationship to continue he needs to want to get help and get serious help. Otherwise If it were me, I would listen to your gut and heed the warning signs, and prevent yourself a lifetime of pain and suffering while continuing to let a Alcoholic partner cause you to suffer.
Just my two cents. I wish you only the best.