You want to address chlorine first. Your TA is actually within range and, if your pH is holding steady without wild fluctuations, you don't need to do anything with the TA.

Take a look at Ben's Best Guess Chlorine Chart. It tells us that at CYA=85 you want a minimum FC = 5 ppm. You should try to get the CYA down a little because the higher it is, the more chlorine you'll need. Your value is really at the upper limit of manageable.

It would be better if you can get it down to 50. You can do that by replacing water - a partial drain and refill works but so does gradual replacement of water lost from splashout and backwashing. Don't use trichlor pucks (if you were in the habit of using them). Go with just bleach.

As to how much bleach, take a look at the Pool Calculator. Input your pool's approximate volume, your current FC, your target FC, and the type of bleach you use, and it will tell you the amount to add to achieve your target.

Welcome to the Pool Forum, your gateway to "Five Minutes A Day" pool maintenance. You did a good job cleaning up what sounds like a cesspit. What method do you use for testing the water?