I would let those who are capable of taking care of themselves (your wife) take care of themselves. And I would see to it that those who can't take care of themselves are properly cared for (the dogs).
The timing of your departure makes no difference to your wife. Whether you leave today or a month from now, she'll likely still be drinking and a mess.
But the timing of your departure can make a world of difference to you. You can have sanity today or a month from now. I vote for today.
And please consider saving the dogs; they can't rescue themselves. Your alcoholic wife is incapable of caring for them properly. Perhaps a no-kill shelter in your area can take them in.