When considering allocation of parental rights and responsibilities the Court will look at the conduct of both parties. A threat that might harm the child will be seen in a negative light by the Court. Your statement that the father should consider terminating his parental rights may be seen as failing to encourage a relationship between parent and child. The likelihood of any court allowing him to terminate his parental rights is virtually zero. Unless you have a willing step parent able to take over the responsibility the courts are very loath to deprive the child of a father and a means of support.
I suggest that you hold him responsible for the financial obligations of being a parent when the child is born. He needs to pay and you need to encourage a relationship between child and father if he is interested and willing to be involved and can behave appropriately.