I keep a few cases of 8% bleach, my favorite floatie, and a bottle of chilled Moscatto on hand at all times! My other values stay pretty stable.
I keep on hand 3 things:
Bleach, Muriatic Acid, and a TF100!
Why do you use phosphate remover? If you are killing all the bad things in your pool that use P04's with proper amounts of chlorine I fail to see what possible difference it would make. Dead algae can't use phosphates...because, well, they are DEAD!
All I keep around is bleach and acid and the trichlor pucks I stick in the floater when I leave town for more than two days.
I've never needed to add Borax or Baking Soda or Calcium.
I hope you are aware that CYA only goes away by backwashing, splashout, or draining. You wroteIt's just going to build and build and build and eventually you'll start a thread complaining of the filter clogging rapidly, or the water looking cloudy or the water is green and the walls are slimy. What is your current CYA level? Do you need to raise it? If not, then why add more?
A gallon of bleach will not provide a week's worth of chlorination unless your pool is covered most of the time or is indoors. Your pool is almost as big as mine, and I use a quart of 12.5% every day. That's almost two gallons a week. If you use weaker grocery store bleach, figure more like three gallons a week. I'd look at that SWG and see if it's really not working or if there's something else going on that's consuming the FC as fast as it can generate it. An overnight loss test would tell you for sure, but your K-2005 test kit is incapable of measuring FC at the level you should have when running the test as well as measuring it accurately enough.