u can refer to overclock guide thread..

1.im dunno about the mobo abality for oc..myb other that use it can tell u
2.it depend on ur setting n rig spec wether i can support u to run 24/7 or not..
3.erm oc if luck n skill bro..cant simply say i want at dis clock with stock vcore then u can hv it..u need to tweak it..if u got luck n skill u mite can hv it
4.erm for this im suggest using true power psu