Why not live together first? Give it a long engagement period. No reason to rush things unless you're in a hurry to have kids?!?
Originally Posted by
salamand 
Is there anyone who WOULD do it again even knowing what you know now?
My second marriage was to an alcoholic. We had two good years then two really bad years. I don't regret the relationship but I do regret getting married. That cost me a butt load of money that I'll be paying off for years, or until I sell this house.
Slow down, stick around and read, learn all you can about addiction and what you face as a loved one. Knowledge is power.