Sufficient wattage? Yes. Reliable? Certainly not. By LC I am assuming you mean Logisys Computers? They are a terribly unreliable PSU manufacturer and run the risk of ruining your build when taxing it.
With that being said, do you have the default CPU cooler? If so then you should not overclock. If you have an aftermarket cooler or went water cooling then the OC depends on the CPU itself as well as your motherboard options. But with adequate cooling achieving 4.5ish usually isn't too big an issue, especially with Sandy Bridge