I'm new to this too but from the research I have done and listen to others here your idle temps are just fine. That is my idle temps too, i have a q6600. As stated previous by BongWizard you need to be more concerned with your temps when under load. That is when it matters. Do a stress test. Some will tell you nothing over 65, some 75. I will leave that to the pros here to explain as I have no knowledge of what is safe.
If you go to O.N.E and scroll down to Voltage Configuration click 'enter' and then look at the bottom of that page you will see your RAM volts, cpu volts, etc. That is what they are currently running at. Adjust accordingly. So if your cpu volts are at 1.29 and you want it at say 1.34 then add .050 to it. Make sense?
Please wait for someone else to agree with me as I am not 100% on this. IMO you could leave it at AUTO until you start to do some real high OCing. If the PC isn't booting up on Auto then that is when it's time to start adding. Just remember though the more volts you add the hotter she'll run.