E.B.
K.,
as a single father who did eventually get to keep my kids full time, I can guarantee you that your husband is WRONG. In the state of Colorado fewer than 1 father in 1,000 end up with full custody. It is more likely that you will have shared custody but that's a different story.
The courts look favorably on moms (and to a lesser extent - dads) that work hard to protect their children and who put their children's best interests ahead of all else. Your husband is completely wrong about your legal standing - job or no job, you are highly regarded within the eyes of the court. Your husband is trying to create fear in you.
There are free legal services. But far ahead of that, protect yourself and your children.
Good luck - take care,
E.