Just as an update, my water pump went last week. Bought the car maybe 7 months ago with 56K, has 65K on it now. Friend had the wp replaced for his uncle just before I bought the car. Kind of early for it to go and it wasn't a Delco unit. It's a Delco now.
To recap, car ran 178-218 mostly with occasional spurts to 220-224 and a rare max of 232-234 from the day I bought it. The high end would come when I was on the highway then run into a wall of traffic. Had the thermostat replaced with the water pump. It's a 198 degree. Temp info now reads from a low of 196 to a max of 207, local traffic (hilly). It would hit 212-214 under the same conditions before the work. Not enough time on it now but the temp is definitely staying in a much narrower band. The mechanic said the old thermostat looked like it was in there for a while. My guess is the thermostat is responsible for the change. Going to run it hard on the highway for a three hour trip next week with a high probability of stop and go traffic so I'll have a better grasp of the difference then.