its ok to do it later if you want thats the nice part of building one yourself is that you can upgrade it when you want. so if you want to delve into overclocking just look around toms for tons of tutorials and cooler reccomendations.
I really appreciate all the help and advice. I pretty much used Tom's to pick out all the parts. The detailed reviews on this site are incredible. here is the final build.http://pcpartpicker.com/p/3sChJ