HH, a rule you can follow and control is no serious talking if he's under the influence, even one drink. You'll resolve nothing.
What other friends, family or social network do you have in place? You might end up being the only adult in your house, but that doesn't mean you'd necessarily be isolated, and you'd go from having 2 children to look after to one. Your toddler actually has an excuse for immature behaviour.
If you're not ready to move yet, use your time to investigate your legal rights and financial position. Maybe start a 'leaving fund', talk to a lawyer, find out how much rents cost, or whether you can get an order to stay in the house. At least you are taking some power into your own hands, and you don't have to move on it until you're ready.