I would say thankfully my car doesn't have A/C, but it would be nice on those hot days! I just wish Ma Mopar would say in the owners manual that "this is the normal operating temp range on the gauge", instead of everyone guessing. I know most people would install an aftermarket gauge, but I don't want one in my car. I probably just need to not over think this, as I have had the gauge quite high (waiting in a long line to get into a car show on a 95 F + day), and the car has never lost or spit out coolant, and that was with the factory 2 core radiator.
If you can afford to stop, I don't disagree with that, that would definitely cool off the motor quicker.