speaking from experience, IMHO the absolute worst thing you could do to your daughter and yourself is immerse her in a relationship with an alcoholic.
Don't fool yourself. Do what is right for your child. God bless him, he is not in control of his life, he is not sober, and he is not in recovery. He will ruin her life, and anybody who helps him do so will have as well.
I'm so sorry.
Cyranoak