HiBD, sounds like you have alot riding on this. Day 3 may be very difficult for you but just remember it is ONE day. I can relate to your situation, most of us have been there. I believe you will be amazed at how good you feel and how well you sleep if you can get 7-10 days under your belt. Then re evaluate this whole thing and create a plan.
But by your own admission your are 100% full on alcoholic. Try and get through step one which is getting back to "normal". If you're like me, you'll know/feel when that happens. Its incredibly calming. Best wishes to you.