Ive been running not cat either for ever with 2.5 with 180 thermostat and runs fine will run 75mph on 33s at 3200 rpm all day and hold 60lbs oil pressure
That seems hot I'm not concerned about fuel mileage I'm sure may run a little rich at 180 but 210 seems a little warm especially towing boat with ac on it's not my everyday driver just to hunting and fishing spots in backwoods