That is some high alk and TA. Read the following about lowering alk and about using muriatic acid safely.

Lowering Alkalinity Step-by-Step

Using Muriatic Acid Safely

Also, trichlor is acidic and drives pH down. So, you'll need to be adding Borax to bring it up. But, then to drop the alk you'll need to add acid to drop the pH and alk and then aerate the pH up. It's gonna be a crazy cycle.

My opinion is that if it were my pool, I'd just add CYA outright and not use trichlor. Go ahead and let the pucks that you put in dissolve and then don't use more. That way, you can go ahead and start working to lower the alk.

Make sense?