Meh, me... I tend not to take advice about space travel from pre schoolers. In other words, you may be better off seeking advice from a community with a little more experiance in the subject matter.
However I can lend you some hope through experiance of my own. My Dad tried to take custody of me from my Mom for years from the time I was 4 until I was old enough to make the choice myself. The whole time my Mom made less, was a known alcoholic and doing nothing to change it. Despite my Dad owning his own bussiness, house and already supporting two kids and a wife without problems, the courts never took me away from my Mom.
There's always a chance, just play your cards right and speak when spoken to, if you know what I'm saying. I'l go so far as to say you come across as hot headed and rash, that could hurt you in front of the judge, attorney or whomever is bearing whitness to the ordeal. Not insulting you, just giving you a heads up.
Good luck with ya' baby boy.
