envision1

So I just bought a cosmos 1000 for $175 at my local computer spot and now I'm contemplating returning it. I will not be doing any overclocking but I will be loading it up with hard drives. Is air cooling and hd cooling something I should be concerned about? If so can I easily and cheaply overcome this issue or should I just return the case and get something else. If I can get a better cooler (in terms of temps) case at a lower price then I'm up for a return.