And don't forget to add chlorine right away to the water as you add it to the pool. That was probably assumed given that you were thinking of adding CYA right away, but I just want to make sure I mention it. Many municpal utilities have switched to using monochloramine instead of regular chlorine for disinfection. And yes, that means that one of the first things you may need to do after you fill up the pool is to shock it with lots of chlorine (exposing it to sunlight will also help break down the monochloramine).

Richard