12 and you saved up for a few years to build an epic PC? Wow, impressive. I wish more kids had the determination to do something like that, I know I most certainly didn't when I was your age. I'm 20 and I found it hard to save up 2 grand for my PC, there's not a chance in hell I could've done that at your age.
You should be proud of yourself, congratulations on working for your own PC instead of just begging mommy and daddy to buy it.
I have the CM hyper 212 evo for my core i5-4670k Oc'ed @ 4.4GHz. In an Aida64 stress test my temps max out in low 70s and while gaming temps never go above 50.