Using it to pay off high interest credit cards is a good idea, especially if you plan to pay it off before the 5/07 date.
More than likely anything you charge to keep the card active will get paid off last, meaning you’ll be paying the full interest on those charges, which is prime + 5.99 (14.24% currently).
Using it as a low interest loan is probably a bad idea if you care about your credit rating. When you take out a huge amount of credit card debt it’s UNSECURED debt. AKA, debt that they can’t come repo anything to reclaim. So lets say you buy a pizza place with it, it would hurt your credit much more than having a 20k small business loan using the pizza place to secure the loan.
End Eco and Lending 101.