Midwest32

For stability testing, use something like AIDA64, and use CPUz to see the volts its actually pulling under load.
 
From there, you just have to play the tweak settings, test, tweak again, test again. It usually takes me 3-4 days to get a stable OC validated and optimal. I test for 15 minutes in aida64 to get a "this seems fine ish" level of assurance, then drop volts in small increments until it doesn't stay stable for 15 mins. Then I bump the volts back up to where it was good for 15 mins, then I start testing for 24 hours. As soon as it passes a 24 hour AIDA64 test, I up the volts by .005 and call that 100% stable, and as optimal as possible (optimal being as low volts as possible).
 
Good luck, happy overclocking!

Case, radiator, fans.  For 1 simple reason.  The fans intake from the front, so any dust gets stuck on the other side of the radiator so all you have to do to clean it is take off the front panel and dust it.  If it's Case, Fans, Rad, you'll have to remove the fans to get to the dust trapped between the fan and rad.

So having had the same question and doing tons of research on it previously, what I learned was best practice is case | radiator | fans but in the end you'll only see a couple degrees of a difference if any. 

You want it like this:
 

Great, thank you!