First time building pc need help

CPU Cooler: It's cheaper and performs better and quieter
Motherboard: Cheaper, but still good quality
RAM: Just plain on cheaper even within the same series
SSD: A SSD
HDD: WD Black isn't worth that extra $30 especially now that you got a SSD
GPU: Cheaper and again, does the same job.
Case: Just a different one that will fit the GPU better, but there are plenty other out there that will also fit the GPU, keep looking if you don't like this one. This one also has black or grey version
PSU: Cheaper, enough wattage for single GPU and still high quality

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-4670K 3.4GHz Quad-Core Processor ($229.96 @ OutletPC)
CPU Cooler: Xigmatek GAIA SD1283 56.3 CFM CPU Cooler ($36.99 @ Amazon)
Motherboard: Asus Z87-A ATX LGA1150 Motherboard ($129.99 @ NCIX US)
Memory: G.Skill Ares Series 8GB (2 x 4GB) DDR3-1600 Memory ($69.99 @ Newegg)
Storage: Kingston SSDNow V300 Series 120GB 2.5" Solid State Disk ($65.99 @ Amazon)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($54.99 @ NCIX US)
Video Card: MSI GeForce GTX 770 2GB Video Card ($319.99 @ NCIX US)
Case: Corsair Graphite Series 230T Orange ATX Mid Tower Case ($74.99 @ Microcenter)
Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply ($59.99 @ Newegg)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($89.98 @ OutletPC)
Total: $1132.86
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-03-06 18:11 EST-0500)

Hope you like it.