The oil temp is the significant data. 210-220 is perfect BUT you want to get it there asap and hold it there.
You probably have a 160 thermostat in there now according to this data.
Running oil under 185f is absolutely detrimental to the engine. 200 is much safer for a low temp.
Water temps up to about 240 are ok. Those will bring your oil temps up to par.
You really aren't overheating until you are over 250f water.
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