Your using Pricewatch so I would imagine you plan on buying where ever parts are cheapest correct? If so I would strongly suggest checking out ResellerRatings http://www.resellerratings.com/ and check up on the companies you plan on buying from.
Your case should be fine. It's the cabinet that may need attention. Is it open at the front or rear? If not, you may have to drill some holes at the rear for airflow. Pricewatch is fine, but you may want to check the particular co you're dealing with using reselleratings.