Lanie. Something to keep in mind. If your financial situation changed for the better (and I hope it does), next year, you could have less need based aid available to you if your income increases.
But back to your original question. Just give the college whatever they ask for. All they want is documentstion to support what you stated on your financial aid application forms.
re: the health insurance…it sounds like your dad is planning to earn a ton of money in the next month. Just keep in mind…your college IS going to require that you either purchase their health insurance plan, or show proof that you have a plan that meets their specifications.