Asrock Z77 extreme 4-Can't go wrong with this board.
CPU: yeah, 3570k is still the best for games.
GPU: I recommend you wait until may to see what Nvidia has to offer. If you can't wait, definitely go for the 680.
Case: The Corsair 600T is a brilliant case, tbh all your choices are excellent, up to you on cases.
SSD: Go for Crucial. They have a great record of reliability and quality.
Ram: 8GB will be fine.