Need Last Minute Opinion on Gaming Build

CPU: Intel Core i5-3570K Box, LGA1155

GPU: XFX DD RADEON 7850 860M 2GB D5 2x mDP HDMI 2x DVI

RAM: 8GB-Kit Corsair Vengeance Low Profile PC3-12800U CL9

MoBo: ASUS P8Z77-V, Sockel 1155, ATX, DDR3 (I need the Wi-Fi.)

Case: BitFenix Shinobi Midi-Tower USB 3.0 black (Is this a good case? Will everything fit?)

PSU: XFX PRO650W Core Edition Full Wired Power Supply (Is the Wattage correct? Will it fit my case? Is there a better PSU?)

HDD: Seagate Barracuda 7200 500GB SATA 6GB's (Do Seagate make good HDDs? I haven't bought a HDD in a long time!)

DVD: ASUS DRW-24B3ST Retail SATA (Again not sure about this disc drive.)

CPU Cooler: Thermalright True Spirit 120 (Anything better for the money?)

Just looking for some all around opinions on whether this is a good build or not. Would love to have some opinions! My budget is pretty much around €900.