noob building a $800 gaming pc, need help

[Kii]

Hello all. My old PC died a few days ago randomly. I know a little bit about building but not enough to say I'm confident in everything or very knowledgeable about specs and parts. I built my last PC but with help from some friends. Unfortunately, I can't get help from them anymore since they don't live here. I am looking to spend roughly $800 for the tower ONLY not including OS. Here is what I have so far, I'd like to know if everything looks okay and if everything is compatible or if anything is unnecessary. My primary use for this computer will be gaming and just normal use like music, browsing, etc. I am not a hardcore gamer (anymore) or play any graphically intensive games. I also do not plan to overclock (because I don't know how and don't wanna mess anything up). Would I need a separate heat sink/fan for the CPU or should the stock one be fine? Thanks for looking!

CASE
CM Storm Enforcer - Gaming Mid Tower Computer Case with USB 3.0 and Water Cooling Support
http://www.newegg.com/Product/Product.aspx?Item=N82E16811119240

MOTHERBOARD
GIGABYTE GA-970A-UD3P AM3+ AMD 970 SATA 6Gb/s USB 3.0 ATX AMD Motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128651

VIDEO CARD
ASUS GTX750TI-OC-2GD5 GeForce GTX 750 Ti 2GB 128-Bit GDDR5 PCI Express 3.0 HDCP Ready Video Card
http://www.newegg.com/Product/Product.aspx?Item=N82E16814121855

POWER SUPPLY
EVGA 600 B 80 PLUS BRONZE Certified 600W Active PFC ATX12V v2.31/EPS 12V v2.91 3 Year Warranty 100-B1-0600-KR Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E16817438014

CPU
AMD FX-8320 Vishera 8-Core 3.5GHz (4.0GHz Turbo) Socket AM3+ 125W Desktop Processor FD8320FRHKBOX
http://www.newegg.com/Product/Product.aspx?Item=N82E16819113285

MEMORY
G.SKILL Sniper Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1866 (PC3 14900) Desktop Memory Model F3-14900CL9D-8GBSR
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231460

SSD
SAMSUNG 840 EVO MZ-7TE250KW 2.5" TLC Internal Solid State Drive (SSD) With Desktop Bundle Kit
http://www.newegg.com/Product/Product.aspx?Item=N82E16820147253

 

[Kii]

I wanted to add, I already have another hard drive and CD/DVD burner from my old computer that I will be carrying over. And I will need an OS too but didn't want to include that in my budget. Not really sure I want Windows 8. Do I need special thermal paste or would it make a noticeable difference or would it just be a waste of money for semi low budget build?