You don't need to change your address...just needs to be a different phone number and a different person on the account. Just wait a day between canceling and signing up.
Another option is to quit Dish for 6 months and get the same deal for what they call a "previous customer promotion". That promotion is exactly the same as the "new customer promotions" according to the executive offices of customer service at Dish Network (kind of a funny story...they straight-out told me to quit for 6 months and come back to get the best promotional deal...no wonder they lost 25,000 customers last quarter!) This would allow you to have the HD-only TurboHD packages available as well...although 6 months from now, you'd be in February anyway.