You could probably use some but also probably not 90 with the days getting shorter. But also TX so maybe.Looks like my CYA should be between 60-90
Here's the thing though. Never add significant batches of CYA without passing an Overnight Chlorine Loss Test. Each 10 CYA raises the slam FC target +4. You'd hate to find out after the fact that algae was sneaking in when it could have been an easier/cheaper slam had you done the overnight test first.
Test of your fill water and report back. If it's high CH we won't want to add much because it'll rise on its own. If it's low CH, then dose to 300 or 350.and my CH should be a lot higher.