+ Lose the SSD, you can always add one later and a 32GB SSD is a waste of money.
+ Silverstone Striders are okay with a PSU you want greater efficiency hence why nothing but SeaSonic Platinum range PSU's touch my build, a 530w GSeries is perfect for you.
+ Avoid corsair RAM, its terrible and good at it. G.Skill or Crucial right now.
+ If you want good onboard sound I would invest in the very expensive but worth it ASUS Crosshair V Formula Z, it has a onboard Creative X-Fi III which is just earth shattering or buy the Thunderbolt which comes with a ASUS ROG Xonar NIC/Audio card.
Being relistic on costs:
MSI 990FX GD65
Crucial Ballistix DDR3 12800 (8GB kit)
XFX Core Edition Pro 550w
MSI Power Edition HD7850OC
1TB Western Digital or Hitachi Deskstar
120GB OCZ Vertex 4