It is overclockable it's just not designed to be overclocked, intel just charge you and extra 100 bucks for a bit of an architecture change.
http://pcpartpicker.com/p/MChrYJ Changed.the.video.card.to.something.a.bit.less.expensive,is.it.a.good.idea? And.does.anyone.know.the.kind.of.cables.Im.going.to.need.to.rig.my.build.all.together?
I'd switch everything to Newegg even if it's a few dollars more for the part, you'll save money in shipping and having it all come from one place will give you piece of mind.
That's still a 770 so you shouldn't see any performance difference. I would recommend Asus, EVGA, and Gigabyte for video cards for quietness and reliabilty, but the MSI will probably be fine. Your components should come with all the internal wiring needed, and your monitor should come with the cable it needs. Therefore, you probably won't need to buy any extra cables, maybe just some zip ties for cable management.
