1: reduce to 8gb
2: add 30 dollars and you get a 7870 from xfx after MIR i think
3 ont use 5900rpm drives as a boot drive. they will slow you down. id rather get a samsung 830 128gb SSD for now and add another hard drive in the future to get more storage
4:this is a better power supply. it will supply more power than that corsair 600w http://pcpartpicker.com/part/xfx-power-supply-p1550sxxb...