I run a 195* t-stat in my '83 GMC plow truck, but it mostly operates in the winter. I installed a t-stat housing temp gauge (mechanical) and found that Autozone sells a cast-iron (China-mfg) t-stat housing that has 'extra' ports on it - perfect for adding a sending unit. This part was super cheap - $12 or something.
I think 210* is ok - but I wouldn't go lot hotter. By running it hot, at least you burn off any condensate in the motor oil, which was my goal on the plow truck.
Colo Springs, CO
'78 FJ40, '89 FJ62, '98 4Runner