give the CYA a few days to completely dissolve- it takes a while to show up on tests
wouldn't worry to much about TA and CH- their exact number isn't important on a vinyl pool. (TA is really just your pH buffer, so if no swings in pH you're fine- mine is 40!)
Algaecide also isn't needed- other than maybe at closing or if you're going to be away for an extended time, like a week long vacation with noone monitoring chlorine levels; with correct FC, you won't need algaecide, the chlorine will keep it killed off!