I know nothing about that make & model engine , but I have installed my share of water pumps over , maybe 50 years .
Have never used a torque wrench on a coolant pump . Just tighten it until it is tight .
I commonly use non hardening Permatex to " glue " the gasket to the removable part . Let it " dry " long enough to hold the gasket in place while getting everything lined up & then start installing fasteners .
If you ever have to replace it again , you throw away the old pump and do not have to scrape sealant from the engine .