Snowman,
I think AA is amazing. My first husband has been sober in AA for 33 years now, and I am sober four and a half years. It will truly change your life.
"Functioning" is a relative term, and "functioning" alcoholics are generally in a stage on the way to completely NONfunctional. I'm glad you are getting off the crazy-train now. Some people may have more dramatic "bottoms" (my own was less dramatic than yours), but you can get off the elevator at any time. You don't need to see how far down you can go. Also, as my sponsor used to say, "Every bottom has a trap door." Keep doing what you are doing, and you have a great life ahead of you.