That PSU should be good enough, but some will tell you to get a better known name PSU, I have used that same one for the last few months without issue, so I guess its up to you if you want to replace it.
just make sure you read up on OCing first before you do anything, I researched for almost 2 months before OCing my C2D. it is actually easier then you think once you understand the process, but take the time to understand it first before doing it.
Whats the total cost for all your stuff???