Detox can be unpredictable, you never know how bad it could get. You should consult a doctor before trying anything. I did taper down from 15 beers a day to 6 over two weeks and then quit without any ill effects. I did have Xanax prescribed by my doctor if I needed it but I only used a few the first couple days and I don't think I needed any.
Like I said though, you just never know how bad it could be. At the very least, confide in a good friend to stay over the first night and watch you. The first sign of trouble go to the ER.