Hi Vampy,
I haven't followed previous posts but i wanted to say Happy Mother's day! Also, as a young mom, I want to tell you how incredibly courageous you are for leaving your husband and finding a place of your own. I'm not sure if i would have the strength to do it if i were in your situation. Also, I don't have advice about resources for you but i urge you to start developing a strong suppport system of loving friends, family and other moms. Also take advantage of any finanicial or other state resources you are eligible for.
As i said before, i have not read your other posts, but once you and your husband are seperated/divorced and you have both had some time to cool down, perhaps you could give him a chance to be a part of lucas's life. Your husband will probably grow to be more mature and if given the chance i am sure he will grow as a dad... (we all grow as parents as our child does.) Two months is so young and it is common for dad's to feel unsure about their role as a father with a newborn. fathers who love their childern can be very supportive to single moms. I wouldn't expect you to allow overnight stays for at least a couple years but he could play with lucas or provide childcare for a couple hours provided he is interested and loving towards lucas. Besides even though things have been rough between you, i don't think that in itself means he doesn't deserve a chance as a father (i have not read other posts though so i might be missing vital info). The more people to love lucas the better right??!
Good luck. Again i really admire your strength and courage! You are amazing!