|"I'm using Asus AI tweak for OC"|
That's your problem. You can't expect a "one size fits all" method to work properly. You need to set AI tuning to manual, then tweak the settings yourself.
"I'm having a temperature problem"
Who installed the heatsink on the CPU? My guess it was done incorrectly.
"If i want to do a dual channel for the RAM is getting the same spec as my ram or 1333mhz is better?"
You need a matched pair of RAM sticks for dual channel mode & you should get a different HDD. Green drives are better off used for storage, not for running the OS.