I agree nothing wrong with 210. Keep in mind if your running a 195 stat that is the temp it begins to open at and is fully open somewhere around 200 - 205ish. The fan clutch will engage by air temp, not coolant temp, but generally will be engaging around 210 - 220, but if you're radiator is clogged it could delay clutch engagement, also your 40 year clutch might not be at it's best. On a modern vehicle with electric fans, they are typically set to turn on around 220 - 225F. I would suggest what you are seeing is pretty normal.
With that said I'm about to pull the trigger on a Champion aluminum radiator because my OE radiator is on borrowed time, but will keep the mechanical fan. I'd really recommend that you look at the amp draw of the electric fan (s) your thinking of installing and the output of your alternator. If your still running the stock 63amp alternator off 1 V-belt you may find yourself unhappy, in one way or another because of excessive amp draw with the fan on, the A/C on high and the lights on. You might then go up to a 90 amp alternator and find you have trouble with the single belt squealing, and then you'll want a serp belt setup. Or maybe you already have a serp belt and I just wrote that for nothing.... Seriously though you might do just fine with a single V-belt run alternator, but know there could be issues.
Did you know that a 7 blade mechanical fan with a properly functioning fan clutch will pull more air than most electrics? There are a lot of shotty aftermarket fan clutches so if you decide to stick with a mechanical fan, get an A/C delco clutch it'll cost twice as much but work properly. You could also run a 180F thermostat if you insist.
Likely someone will come along and recommend some electric fans, I can't help with that I've seen to many issues with aftermarket electric fans at the shop to want one for myself.