Hey the the motherboard supports 2133mhz Overcloked ram so check that out . And you can add a 1tb WD hard drive with all pcked in a case with my sugestions. Since its a red scheme : Cooler Master Elite 430 Red Edition - Mid Tower Computer Case with Windowed Side Panel and All-Black Interior
These is the setup I use and build based on parts in Seoul at Yongsan Electronics Market
CPU: AMD FX-6300 3.5GHz 6-Core Processor $50
CPU Cooler: Zalman CNPS10X Performa CPU Cooler $7
Motherboard: ASRock 970M PRO3 Micro ATX AM3+/AM3 Motherboard $50
Video Card: Asus Radeon R9 280X 3GB Direct CU II Video Card $180
Memory: Samsung 4GB (1 x 4GB) DDR3-1600 Memory $15
Memory: Samsung 4GB (1 x 4GB) DDR3-1600 Memory $15
Storage: Transcend SSD370 128GB 2.5" Solid State Drive $40
Power Supply: Thermaltake SMART 650W 80+ Bronze Certified ATX Power Supply $20
Case: Rosewill FBM-01 MicroATX Mini Tower Case $15
Total: $390