well one way or another, with dry rock, you are going to be waiting months. You could wash in muratic acid, rinse with ro, set in sun for a week or so and then put in the tank, but doing it that way will make your cycle take several months before the tank will stabilize to the point that you can put the first few things in. Doing it blazinjack's way will actually save you quite a bit of time.
Of course the fastest way all around would be to start with live rock