i changed around some stuff and since you were forgetting many important things u didnt mention if u needed them or not so i put them in just in case also the graphics card u selected isnt very good so i chose for u a different 1 the diamond cards arent very reliable and the fans on the card are super loud http://pcpartpicker.com/p/2hcYD
As to the type of case, just make sure it is an ATX case. It is fine if it supports other form factors as well. As for other aspects, make sure there is at least one 5.25 inch drive bay and at least 2 3.5 inch drive bays. Also check reviews to see how satisfied people are with the build quality and air flow.
I didnt give a specific case because their are to many worthy options to list. Corsair and Cooler Master are known for having great cases. In the end the case is largely aesthetic, so get one that expresses you!