I don't see any mention of your memory brand, amount, and the timings you're running, all you mention is the speed 1333mhz?
If your memory timings and settings aren't solidly configured in, no amount of Vcore will stabilize it.
You going over 1.5v vcore not knowing anymore than you do is crazy, you're risking your investment!
What operating system are you running?
Cleaning thermal compound with Purell hand sanitizer!
Sorry for laughing, but do you even know why that's not a good idea at all!
If you don't have what you need then wait until you get it, rushing into overclocking is a bad idea, when you lack the knowledge of the whys and wherefores, of how everything works together to accomplish an overclock goal.
Btw, you do have a tutorial on installing the CM Hyper 212+, I have tried setting the heatsink in both directions, I find it extremely hard to tighten the screws if it's in vertical direction as the screws are placed directly under the fins, literally.. Did you have to hold the screwdriver at a diagonal angle too to screw it in?
The Cooler Master Hyper 212+ has half moon recesses in the fin configuration to allow clearance for a screwdriver, but the screwdriver blade has to be long enough to take advantage of that!