I need some help regarding the math, behind how to figure out how much of my current debt I need to go ahead and pay down/off , in order to meet the requirements that my Lender is requiring via my Residual Income

Currently, I have $8,000 in credit card debt , and given that, with my Net income from my last 2 years of taxes, I qualify for just over a $60,000 loan

I am wanting to qualify for a $80,000 loan, but my Residual Income is holding me back

Is there a Formula that I can use, that will tell me ..... for every $1,000 of my current Debt that I pay off , It will increase the loan I can qualify for , by X amount of dollars ? So, say..... I pay off $1000 dollars of debt, equals I now qualify for $65,000 ?

I need as much money as I can get , to put towards a down payment, so I am trying to narrow it down, almost to the T , as far as how much of my current $8,000 in debt I need to go ahead and pay off, that will qualify me for the $80,000

Thank you for the help everyone, really appreciate it