First Build optimization?

I have been looking to replace my crashed pc for about 6 months. I had the cash in my pocket and was 15 minutes from micro center yesterday, So I dropped a grand.

http://pcpartpicker.com/p/eNMK

I have an Acer AL2216W monitor as well as a LG 45(or so)" plasma TV I plan to use.

The build was relatively painless, except I couldn't find the modular cable to molex plug for my case fans until a few hour after  

It has been running nonstop for around 36hours.
f6 bios
windows update
malwarebytes
3dmark - 8459
5.9 windows index (guess I need an ssd)
ran prime95 for 6 hours
cpu temp 31C idle 45C arma2 demo

Questions-

How do I know if this thing is running as it should?
What programs are recommended on a fresh install?
How should I go about Overclocking? I tried the gigabyte easytuner and I tried changing the multiplier through bios but cpuz still tells Im running at 3.4ghz

also 1 core runs ~43C while the other three running ~35C strange?

any help will be appreciated.