He needs to get his own place and seek therapy. I would say wait a year before you make a decision. Yes, you're right - he says he wants to be a father, not a husband. That's a red flag to me.
He has some work to do to take responsibility for his own life.
I know what you mean about having dreamt about this day. You just can't turn back the clock.
M 16 yrs, WH62, P54 3 adult blended kids EA 11/13, BD1 6/14 PA fall 14, BD2 2/15 Piecing 2015, BD3 12/15 Separated 4/16 WH moved OW in 5/16 Divorced 6/15/17