Hi, first-time PC builder here. I'm narrowing down my part selections so I can hopefully order them on Black Friday. My question is, can any of you PC vets foresee any problems that might occur with these parts? Or will they all play nicely together? AMD PhenomII X4 955BE 3.2GHz 6MB Quad-Core 125W ASRock 880G EXTREME3 AM3 AMD 880G HDMI SATA 6GB/s USB 3.0 ATX AMD Motherboard G.SKILL 4GB (2 x 2GB) DDR3 1600 CAS 9 Two SAPPHIRE Radeon HD 6850s in Crossfire Western Digital Caviar Black 1TB 64mb Cache 7200RPM 6.0GB/s LITE-ON Black 24X SATA CD/DVD Burner Antec TruePower TP-750 750W 80+ Certified Crossfire Ready Antec Three Hundred Illusion Black Steel ATX Mid Tower Computer Case Zalman CNPS10X Performa CPU Cooler ARCTIC COOLING MX-4 Thermal Compound Also: Does anybody know where I might be able to snag some nice Black Friday deals on any of these components? Thanks!