Also, think about the practical ramifications of continuing to lie. I couldn't tell for certain if you're going to meetings, but if you are, aren't you going to want to share with your loved ones your important milestones, like your one year sober birthday? And if you're not going to AA, you should start, as it is IMHO very difficult for an alcoholic to stay sober without them--which is another reason you need to tell your wife. How are you going to cover THAT up?
Or what about when it's New Year's Eve, or when your buddies are over watching the game, or another time you would normally be "social drinking" in front of your wife. Do you not think she'll notice that now you never take even a sip, and wonder why that is? And if you "take a sip" to cover yourself, well--if you are a true alcoholic, I'm sure you know how dangerous that is.
I don't think you really even have a choice here, not if you want to stay married to this woman, not if you're serious at all about your sobriety.