WOW !!! A LITTLE high is an understatement. The intoductory rate for a new purchase is 10.9%. That offer is good for 30 days after your CM asks you to buy. There are no acceptions to the 30 days. Further that interest rate is only for direct debit, otherwise it is 11.9 %.
You may want to consider other means, like a home equity loan, or even a margin loan on your securities account, which would be about 9 % or even a loan on your 401K. If you do the 401K loan, the neat little factor is the rate of interest is acctually being paid to you, back in to the 401K plan.