Will these parts work together (kind of nervous...)

Let me preface this by saying, YES, I did buy a computer from CyberPower PC (hasnt arrived yet). This was before I read any horror stories. Let me explain a little bit though before you all light into me, because I know theres going to be 100 replies that I should have built it myself :)

After my short intro I'll get to the point, I just gotta say it because this IS on r/buildapc, and after all, i'm not building it (but i do need your help!).

I have built computers since I was 18 or so, and have built a decent number of them for myself or for family. Several things lead me to taking this route. First and foremost my business partner and I wanted to get matching gaming PC's to play saints 3 and bf3 after we closed a large deal. He's not very computer literate, and I'm not there locally to build it for him, so I deemed the best choice was to buy them pre-assembled, being full aware of the price difference in exchange for the convenience of it arriving at your door in "working" order. I use the term loosely after reading reviews :P

In retrospect, i think it never really occured to me to check into cyberpower reviews I because called them with a question about their site and they picked up on the first ring, and he was very supportive. Their site seemed professional, and I heard a few people on reddit recommend it. So while I looked at individual parts reviews, i never looked at reviews for the company itself.

it seems most issues are arising from people buying lower end models which are halfway/half-assed assembled, or with shitty low-quality power supplies which burn their computer to the ground. If it comes with a few fans not attached, or something not quite connected that I can deal with.. I know how to put them all in. On the other hand, it's been awhile since I was really UP on what parts work together, and it seems other people are having issues with incompatible parts being assembled that turn their box into a fireworks display when they turn it on.

When I get the PC im gonna do a thorough rundown of all the connections, making sure everything is seated and whatnot properly before turning it on, but what I'm wondering if all the parts i got ARE actually compatible. I assumed they were because the computer builder on the site said its fine, but now I'm not so sure..

Would anyone be willing to help me with a thorough visual check to see if anything here is incompatible?

• =======ESSENTIALS... THE SHIT IM WORRIED ABOUT=======
• CASE: Corsair Obsidian Series 650D Mid-Tower Gaming Case w/ dual 200mm fans, integrated fan controller, front USB 3.0 Port & Side-Panel Window
• POWERSUPPLY:* 850 Watts - Corsair CMPSU-850TXV2 80 Plus Power Supply - Quad SLI Ready
• MOTHERBOARD:* [CrossFireX/SLI] GigaByte GA-Z68MA-D2H-B3 Intel Z68 Chipset DDR3 mATX MB w/ Lucid Virtu Intel Smart Response Technology & 7.1 HD Audio, GbLAN, USB3.0, 2x SATA-III RAID, 2 Gen2 PCIe, 1 PCIe X4 & 1 PCIe X1 (All Venom OC Certified)
• CPU:Intel® Core™ i5-2500K 3.30 GHz 6M Intel Smart Cache LGA1155 (All Venom OC Certified) [-94]
• OVERCLOCK: Extreme OC (Extreme Overclock 20% or more)
• MEMORY:16GB (8GBx2) DDR3/1600MHz Dual Channel Memory [+101] (Corsair or Major Brand)
• VIDEO CARD 1:NVIDIA GeForce GTX 570 HD 2.5GB 16X PCIe Video Card [+177] (EVGA Powered by NVIDIA)
• VIDEO CARD 2:NVIDIA GeForce GTX 570 HD 2.5GB 16X PCIe Video Card [+177] (EVGA Powered by NVIDIA)
• HDD:1TB SATA-III 6.0Gb/s 32MB Cache 7200RPM HDD (Single Drive)
• SMART RESPONSE SSD:40 GB Intel 320 Series SATA-II 3.0Gb/s SSD - 200MB/s Read & 45MB/s Write [+25] (Single Drive)
• =======COOLING STUFF... SEMI-WORRIED ABOUT=======
• COOLING SYSTEM: Asetek 510LC Liquid Cooling System 120MM Radiator & Fan (Enhanced Cooling Performance + Extreme Silent at 20dBA) (Single Enermax Enlobal Silent High Performance 120MM Fan [+15])
• COOLANT:Standard Coolant
• CASE FAN:Maximum 120MM Color Case Cooling Fans for your selected case [+15] (Blue Color)
• TEMP:Aerocool V12XT Dual Bay Touch Screen Fan Control [+49]
• NOISEREDUCE1:Sound Absorbing Foam on Side, Top And Bottom panels [+29]
• NOISEREDUCE2:Anti-Vibration Fan Mounts [+9]
• =======MISC ACCESSORIES=======
• NETWORK:Onboard Gigabit LAN Network
• CASE UPGRADE:Flexible LED Interior Light Strip [+19] (Blue Color [+0])
• CD: 24X Double Layer Dual Format DVD+-R/+-RW + CD-R/RW Drive [-40] (BLACK COLOR)
• WNC:PCI Wireless 802.11n 150Mbps Network Interface Card [+19]

Lastly, is there anything you can think of that I should do before turning it on? What could cause the most damage if it's not seated right?