I can't think of much to add; Watermom's covered it all.

In the 5 gallon bucket, I'm guessing that the CYA made more of a white slurry than a clear solution. It's really slow to dissolve. I'd wait a few days to a week before testing for CYA, as you point out there's only a couple tests in the kit.

I suggest that you spend the first couple weeks chlorinating with bleach to learn what your pool needs then start the SWCG. Please consider defeating / removing the copper ionizer unit. Copper stains the pool and sometimes swimmers.

Do you have a K-2006 or is it on the way?

@Watermom: Perhaps you remember that I kept about 3000 ppm salt in my Intex donut just for the feel.