Please Critique My Gaming Computer Build!

Basically, I have just gotten a job, and I am able to save up and build my own gaming computer. A lot of people give the advice of building a decent computer ($500-1000), but I don't really want to do that. I have a laptop that I can survive with until my computer is built. I decided to create a part list on pcpartpicker.com. Im not someone who is super tech savvy, but I have a general knowledge of computers and their parts. What I want out of my computer is: The ability to play games at high fps and graphics (ex. League and other Steam games). Once I get my computer I would like to start streaming, so I would need parts able to do that. Lastly, next Friday is Black Friday and by then I will have roughly $300 to spend. With that being said any advice as to in what order I should buy items would be appreciated. If there are any other questions that you guys or gals need answered to make this process easier, please ask! I will be checking this a lot. Thank you!
So, without further ado, here is the list:

CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor
Link:http://www.amazon.com/Intel-Core-i5-3570K-Quad-Core-Processor/dp/B007SZ0E1K/ref=sr_1_1?ie=UTF8&qid=1416706920&sr=8-1&keywords=Intel+Core+i5-3570K+3.4GHz+Quad-Core+Processor

CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler
Link : http://www.amazon.com/Cooler-Master-Hyper-212-RR-212E-20PK-R2/dp/B005O65JXI/ref=sr_1_1?ie=UTF8&qid=1416707236&sr=8-1&keywords=Cooler+Master+Hyper+212+EVO+82.9+CFM+Sleeve+Bearing+CPU+Cooler

Motherboard: ASRock Z77 Extreme4 ATX LGA1155 Motherboard
Link: http://www.amazon.com/LGA1155-CrossFireX-Motherboard-Z77-EXTREME4/dp/B007KTY4A6/ref=sr_1_1?ie=UTF8&qid=1416706946&sr=8-1&keywords=ASRock+Z77+Extreme4+ATX+LGA1155+Motherboard

Memory: Corsair Vengeance 16GB (2 x 8GB) DDR3-1600 Memory
Link: http://www.amazon.com/Corsair-Vengeance-Desktop-Memory-CMZ16GX3M2A1600C10/dp/B006EWUO22/ref=sr_1_2?ie=UTF8&qid=1416706968&sr=8-2&keywords=Corsair+Vengeance+16GB+%282+x+8GB%29+DDR3-1600+Memory

SSD: Samsung 840 Pro Series 256GB 2.5" Solid State Drive
Link: http://www.amazon.com/Samsung-Electronics-Series-2-5-Inch-MZ-7PD256BW/dp/B009NB8WRU/ref=sr_1_1?ie=UTF8&qid=1416707003&sr=8-1&keywords=Samsung+840+Pro+Series+256GB+2.5%22+Solid+State+Drive

HDD: Western Digital Caviar Black 2TB 3.5" 7200RPM Internal Hard Drive
Link: http://www.amazon.com/Western-Digital-Caviar-Black-WD1001FALS/dp/B001C271MA/ref=sr_1_1?ie=UTF8&qid=1416707025&sr=8-1&keywords=Western+Digital+Caviar+Black+2TB+3.5%22+7200RPM+Internal+Hard+Drive

GPU: MSI GeForce GTX 970 4GB Twin Frozr V Video Card
Link: http://www.amazon.com/MSI-GTX-970-GAMING-4G/dp/B00NN0GEXQ/ref=sr_1_1?ie=UTF8&qid=1416707047&sr=8-1&keywords=MSI+GeForce+GTX+970+4GB+Twin+Frozr+V+Video+Card

Case: Corsair 900D ATX Full Tower Case (I love this case)
Link: http://www.amazon.com/Corsair-Obsidian-Series-Computer-CC-9011022-WW/dp/B00B1R8JT0/ref=sr_1_1?ie=UTF8&qid=1416707067&sr=8-1&keywords=Corsair+900D+ATX+Full+Tower+Case

PSU: Corsair RM 850W 80+ Gold Certified Fully-Modular ATX Power Supply
Link: http://www.amazon.com/Corsair-Series-80PLUS-Gold-Certified-Supply/dp/B00EB7UIXM/ref=sr_1_fkmr0_1?ie=UTF8&qid=1416707087&sr=8-1-fkmr0&keywords=Corsair+RM+850W+80%2B+Gold+Certified+Fully-Modular+ATX+Power+Supply

Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer
Link: http://www.amazon.com/Asus-Serial-ATA-Internal-Optical-DRW-24B1ST/dp/B0033Z2BAQ/ref=sr_1_1?ie=UTF8&qid=1416707109&sr=8-1&keywords=Asus+DRW-24B1ST%2FBLK%2FB%2FAS+DVD%2FCD+Writer

Wireless Network Adapter (I have no idea if I need this): Asus PCE-AC68 802.11a/b/g/n/ac PCI-Express x1 Wi-Fi Adapter
Link: http://www.amazon.com/Dual-Band-Wireless-AC1900-PCI-E-Adapter-PCE-AC68/dp/B00F42V83C/ref=sr_1_1?ie=UTF8&qid=1416707140&sr=8-1&keywords=Asus+PCE-AC68+802.11a%2Fb%2Fg%2Fn%2Fac+PCI-Express+x1+Wi-Fi+Adapter

Thanks everyone for deciding to help a nooby out! I am open to any and all criticism!

P.S. Sorry if you guys don't like amazon. I didn't know what else to link to as I didn't want to link directly to their originating sites.