My motor runs cool....maybe too cool?

My stock 73 318 runs between 150 and 160 per the aftermarket gauge and verified with an IR thermometer.
Note those IR thermometers are notoriously inaccurate.
If mine is off, it's off the exact amount that my gauge is.

This is a 65,000 original mile motor and runs just fine.
Warms up "as expected" with the OEM choke.

I was having an issue using the AC where it would get up over 200 and boil over.
Since then I have evacuated the AC and replaced the dryer.
Now it does much better, running about 190-195 with the AC on.
Haven't really had the 100* weather to thoroughly test it, though.