Your 12V is within spec +-10%(+-1.2V), but I'm more comfortable staying within 5%(+-.6V). As long as you are stable while the system runs the programs that you want, then you should be good. Did you get any lockups or shutdowns while loading the system?
Ran some stress tests with my current system and under load the system is completely stable and 12v voltage values stay at 11.39 (Everest). I have seen on various websites that the minimum 12v voltage value is 11.40. Should I risk trying this PSU with my new 8800GTS?