I'm pretty sure that this is what I am going to get for sure now. I was debating whether I should get that motherboard Z77 or whatever that is 10 dollars extra, should I get that or just keep the gen3 ext3? give me inputs! also would my RAM MEMORY fit with my CPU cooler?! THAT'S IT!
COMBO POWER SUPPLY+HDD :
Power Supply C Power and Cooling Silencer Mk II 750W High Performance 80PLUS Silver SLI CrossFire ready Power Supply
Internal HDD: Seagate Barracuda ST1000DM003 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...
I would get a z77 MoBo. It's only a few bucks more expensive. Are you planning to Crossfire in the future? If you are I suggest the ASrock Extreme 4 z77 MoBo. If not then the Gigabyte z77 d3h should do you well. Also, your PSU should be fine IF you are crossfiring. If not, then follow Outlander_04's advice and get a lower wattage PSU.
Don't worry. Some people recommend different things. Some recommend the wattage and amperage needed for a single GPU and some recommend the wattage and amperage for future upgrades. Your PSU is just fine.
One thing I really advise you to change is the case. Unless you plan on 4 GPUs or a crazy Water Cooling setup, you can just use a mid-tower.