210 is fine. You are not even putting a load on the motor, so it is less important anyhow. Chevy recommends that you don't run their motors hard if the
oil is over 230, that's great, but not always possible under racing conditions.
You have a problem if the
oil gets hotter faster than the water.
Larger capacity oiling systems don't run cooler, they just take longer to heat up and longer to cool off. So if your beast holds 9 quarts of
oil, it will take longer to get to temp, but even after it has been parked long enough for the water to cool off, the oil will remain at elevated temperatures. So it may appear that the oil heated up very quickly, when in fact it could just be latent heat from a half hour ago when you shut the motor off.