Those temps in stop-and-go wouldn't alarm me, but it should cool off at highway speeds.

I think you should be running a bit cooler. With a 'bad' fan I'd expect it might take a bit longer to cool down.

I'd suspect a still-diminished radiator. Perhaps the flush didn't quite get it all, or it's still partially blocked.

My 86 SDL ran 'warmer' at stop and go, would reach 90-95+, but always cooled to 85C or so on the highway. I then found the radiator had a leak, and so it was replaced.

It's still running at 85C on the highway, and not much warmer around town.

As the car is warming up, carefully check the radiator for uniform heating by feel. 'Cold' spots may mean partial blockage.

Best Regards,
Jim