You shouldn't need to disable anything in order to get a stable overclock.
The only things that I disable are the spread spectrum options. For the Sandy and Ivy bridge boards, it is as simple as put the frequency and voltage up to the max that you can sustain the heat from, and then measure stability. If unstable, knock down the multi by 1 and try again. Rinse, repeat! You'll eventually find the max permissable overclock for that CPU/board
Just don't try and overclock the memory and base clock to start with. Sandy/Ivy components react best to multiplier overclocks most significantly.
Try and let us know how you get on.