Your rig is almost like mine - and the settings for that are in the OP (my bios screenshots)
As for starting fresh - the simple reason why is:
You start first checking your hardware is ok (I skipped this step several months ago, then found out I had an actually hardware problem with one of my DIMMs) -> ram setting set, everything else to stock + all win updates done + latest bios.
Then you move to manual to find the lowest and best stability for your system
Then you move to offset to make it easy/less stressful for your CPU for power saving.
People just jump in at the last stage, then start complaining they have problems.
Overcloking is simple, and can be done by an 8yr old, as long as they have this type of guide in front of them.
What most people LACK when overcloking is patience.
I knew from OC'ing in the past - if you want to be stable, and be running a fully SAFE system, you should ALWAYS make sure that you spare some time for that.
By that I mean - spend some time, then you'll be rewarded.