OCZ Ram is just a bad idea right now. Too many issues.
Your build isn't SLI capable. Mobo doesn't have 2 slots, and AMD chipsets do not support SLI.
Do you use any heavily threaded software? If not, then that x6 is useless and in fact, will give you less gaming performance for more money.
Some budget case suggestion are Antec 300 illusion, CM 690 II and CM Elite. These are all $60 or under.