New engines can run a little warmer until they are fully broken in, but it does sound like you are higher than the comfort zone. Have you made sure there are no air pockets? Squeeze the upper radiator hose, it should be firm when the thermostat is open.

Also check to be sure the lower hose isn't collapsing. Original style hoses had an internal spring coil to prevent collapse. Many years ago I had a car that would idle cool with no issues but got hot when driving. It took a while to find that the hose was collapsing when the pump sped up. The car had a numerically high rear axle ratio and the water pump pulley was a small diameter, making the problem worse.

If you want to sell that 19" clutch fan, let me know. Radiator and shroud too if they are like new.