It is something I have done. It may be aggravating and time consuming, but it is also satisfying and a help to all of us to make scamers not get away with their activities. It never is a waste of time.
At only a few hundred miles it will tend to run much warmer than after it gets broken in. you might advance the timing a bit more as the gas nowadays is much better. Did the radiator get backflushed recently enough to know its condition?
I once washed my folks '48 Chevrolet with dull paint with BonAmi and it really helped it shine. I also hand polished a fender on one of my cars with the dusting of Mount St Helens volcanic ash just to see as an experiment. It cut fast and left a piano gloss finish. I should have done the whole car!