Looking for Advice on Cooling and Power Supply

I've saved up some money and am planning on getting my first serious desktop. I'm looking at CyberpowerPC, I read some good reviews on their computers and managed to get something that looks good for just under my $1000 budget. However I'm very new to this and am concerned about cooling and power. Their site tells me that my build uses 495 W, I'm looking at getting a 600 W power supply to account for decay and make sure I have enough. Will that be acceptable? Also, I know nothing about liquid cooling. I chose to get the max number of fans for my tower and I guess the cooling system is Asetek 510LC Liquid Cooling System 120MM Radiator & Fan. Will this be sufficient to cool my system? I can upgrade that if I need to and I'm unclear on whether I still need all the fans, please let me know what would work best. I really want to avoid destroying this thing by doing something dumb. Also, I've just been trying to pick good parts based off what I've read online, so if you have any suggestions where I could do better let me know. I know I could upgrade the graphics card more but from what I've read this is the best compromise in my price range. Lastly, I was wondering about overclocking, should I do it, will it add too much heat, etc. Here's what I want to get:

Tower:
-Thermaltake Commander Mid-Tower Gaming Case

CPU:
-AMD FX-8320 3.50 GHz Eight-Core AM3+ CPU 8MB L2 Cache & Turbo Core Technology

Cooling:
-Asetek 510LC Liquid Cooling System 120MM Radiator & Fan (Enhanced Cooling Performance + Extreme Silent at 20dBA) (Single Standard 120MM Fan)

Motherboard:
-[CrossFireX] GIGABYTE GA-970A-DS3P AMD 970 Socket AM3+ ATX Mainboard w/ On/Off Charge, Ultra Durable 4 Classic, 7.1 Audio, GbLAN, 2 Gen2 PCIe X16, 3 PCIe X1 & 2 PCI

Memory:
-8GB (4GBx2) DDR3/1600MHz Dual Channel Memory (Corsair or Major Brand)

GPU:
-NVIDIA GeForce GTX 760 2GB 16X PCIe 3.0 Video Card (Major Brand Powered by NVIDIA)

Power Supply:
-Corsair CX600 600W 80 PLUS BRONZE Certified Active PFC Power Supply

HDD:
-1TB SATA-III 6.0Gb/s 32MB Cache 7200RPM HDD (Single Drive)

If I missed anything please let me know. Any advice on this is greatly appreciated. Thanks for any help and your time.