Save yourself some cash and drop the Sabertooth. It's just a gimmick and it's essentially the ASUS P8Z77-V PRO or ASRock Z77 Extreme 6. See for yourself.
You'll be using the Noctua NH-D14, so you'll want Low Profile RAM. Get either this or this. Depending on your preference. 2x8gb is generally better. I can't find that for Corsair, unfortunately.
Also, if this pc is just for gaming, 8gb should be plenty.
With that budget, get the Caviar Black already for a storage HDD.
+1 to Nw333's GPU comment.
I like how the case looks.