When they put the Cincinnati locals up we could order them the day that DISH made them available (9/5/2000).
I would guess that since you need the SuperDish before you can get your locals you should be able to call ahead of time to arrange installation of your SuperDish. Knowing DISH, this may not be true. You may have to wait until the 16th to order them and the SuperDish.
Let us know what they tell you. I'm interested in how long it is going to take to actually get a SuperDish installed.