I'm not a law expert, and of course, laws vary from place to place, but if he owes you back child support, you should definitely take him to court over that. You might even do a background check to see if there are other cases against him (perhaps by other women whom he owes child support).

I don't know if you can bill him her college; I think child support only goes till age 18, but you should ask a lawyer.

I don't think you can get his license revoked. Do you mean driver's license?

I don't know about statutes of limitations in this case, but you might have a case against him for having sex with you as a minor. That's statutory rape. And since he's a sex offender, he might get a harsher penalty than if it were a first-time offense.

I would really address these questions to a lawyer.