Katchie,
Do you want him home? Yesterday, he LEFT you and your kids via text two days after telling you that everything was alright, which was three days after suggesting you separate and he move out.
I am sure you want your family back in one solid piece under one roof, but he has not changed at all. He is not a well man and whatever he is up to is not working for your family. This is not a healthy man to have around you or your kids. He already knows you don't want him to drink and that she shouldn't drink. None of either of your words amount to much right now. Remember actions, not words. His actions show you where he is and who he is right now. The poor baby wants his cushy home life and to separate as he needs (things he doesn't want you to see or know about).
I am so sorry for your predicament and I know it is an emotional upheaval that you want to end. You are volunteering for more mind f*cking by welcoming him back right now.