your going to have to find out what voltage your CPU needs for it to be stable, no one can tell you as every CPU overclocks differently.
When you say "Stuck" do you mean the PC crashes?
You need to run a program like prime95 or OCCT for 8+ Hours to make sure its stable, and monitor your temps with Real-Temp. I would keep the temps below 70C.
Just set your memory multi to the lowest setting, so that your not overclocking your memory and therefore it wont cause instability.
It doesnt matter if your memory is running at 1333mhz and your FSB is 1600mhz.
Your RAM doesnt need to be at a higher speed than your FSB
Dont use AUTO settings for your voltages, your motherboard is only interested in stability and will set the voltages really high regardless of temps, Your best off setting the Vcore really low and keep slowly increasing it until you gain stability. Remember to check for stability with prime95 or OCCT and monitor your temps.
I run my RAM at FSB speed (1:1 by CPUZ). Overclocking RAM does not accomplish much beside reducing system stability and occasionally limiting the CPU overclock. Intel's recommended maximum voltage is 1.3625 volts. You need to keep your CPU temps under 70 C.