I think the OP is saying that they live with their mom who is lower income and qualifies them for Pell Grant, but their dad is “still in the picture and contributing” and dad’s budget to pay for college is 80K.
It seems to me that as soon as dad pays one year of 80K towards college, they would become the FAFSA main contributor and would need to provide their information, in which case the Pell would go away? But I am not an expert on these situations.