Currently, financing through Disney, you get 11.5% with 10% downpayment, 10.95% with 20% down, good for 3, 7, or 10 year terms.
For the 8.5% rate, 50% down, with the remainder financed for 1 year.
Be careful using a home equity loan. Do you really want to put your home at risk for a DVC purchase? If you default on a Disney loan, you still get to keep your house.