Case: If space isn't an issue, you probably want to get a bigger one (ie. a Full Tower). My case (Antec 900) is nice, but it barely fits all of my components, and as a result restricts air flow more than I would like. IMO it's worth spending extra bean for a good case. The Antec 1200 is very highly rated:
http://www.newegg.ca/Product/Product...82E16811129043