This is a personal finance question more than a FICO question.
I'm sure HFC thinks it's a good move (for you to pay off your debt with a HELOC) because it means they get paid. It may not be a good move for you. Some people say you should never trade unsecured debt (credit card debt) for secured debt because if you get into trouble and can't pay it, you can lose your house. On the other hand, paying over 30% in interest is obscene. Wait and see what HFC says about a reduced rate.