It will be an interesting tool to see how Jack structures it. Percentage of interest, amortization schedule and such. A line of credit isn't like a loan. You only pay interest on what you use and it's not compound interest. That's why it's essential to know your monthly spend and income. If used properly you could have a nice opportunity to pay your bills,and stack sats. While not having to wait for the next paycheck to have access to liquidity. Every paycheck has to go back into the line of credit to keep your interest paid low.
People use HELOCs like this all the time. Look up Velocity Banking online or YouTube. Businesses do the same, they pull equity out of there business and use the line of credit to maximize cash flow.