Most air cooling is over-rated to be honest.
A good CPU cooler and good graphics card will look after themselves for the most part. Just a couple of case fans is all that's required. Heat rises anyway so all hot air will leave the top of the case (providing there's mesh or something up there and not an enclosed design).
Take the LANBOY air for example, that case can have something like 15 case fans, and even with every single fan attached, it does't cool any more than well designed case with 3-4 fans.