If you have a good fan bolted to that radiator and the rest of your cooling system is up to snuff you shouldn't have any problems. The AMS time attack car uses a Koyo Civic Race Radiator that's 2" thick with a 12" FAL fan with no problems.
As far as temp.... I would avoid anything over 220 F but 190 is where it should be. A trick if you are overheating too is to turn on your heater full blast.
I'm sure other people will chime in. I forget what point the coolant will boil with a standard radiator cap, but the pressure in the system is what does most of your boiling point raising. Make sure you have a radiator cap that isn't getting weak or it'll boil over on you prematurely.
Another thing is you can run a mix a more aggressive mix of water since your in California. I would probably run 75 to 66 percent water. The antifreeze at this point is just for corrosion protection.
