If you don't need a case quite that big, I can't recommend the HAF912 enough....plus it's cheaper.
Cooler Master also makes a Hyper 212 Evo, I think, that should allow you plenty of OC'ing headroom. I have two of the Hyper 212+ models, and they are quiet and perform very well....and are very cheap.
Samsung optical drives work very well and are just as cheap. I'm not a big Asus guy, so maybe that's just an opinion.