Liztola, congratulations for standing up for yourself and your son. After all he's done, he needs to show you a year of alcohol free behavior with solid AA or other program work, or nothing changes if nothing changes.
As for his buying a condo, he's considering spending marital assets in this separation, and he shouldn't have that freedom to commit joint assets just for his own use. That needs to come as part of a negotiated legal separation or divorce proceedings.
Time to see a lawyer, ASAP. Not necessarily to file for divorce, but to make sure your legal and financial rights are protected.
I've been thinking about you, so good to hear from you; sending my support your way.
ShootingStar1