After doing 45mins-1 hour of research a day for the past week or so I've decided to invest in an intel 2500k over recommendations for fx 6100's, intel 2400s, and 2500s. I do not know how to OC but based on what i've read, I would like to keep that potential available to me in the future.
CD drive (basic standard):
ASUS 24X DVD Burner
XFX HD-687A-ZHFC Radeon HD 6870 1GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card
recommended by coworkers w/ 5+ years of computer component/building experience. However, this graphics card was initially recommended for an amd fx 6100 CPU and asus m588 mobo
Should I change my GPU?
CORSAIR Enthusiast Series TX650 V2 650W ATX12V v2.31/ EPS12V v2.92 80 PLUS BRONZE Certified
Great price w/ mail in rebate and has great reviews, solid item.
G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)
GIGABYTE GA-Z68X-UD3H-B3 LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard
Highly recommended mobo for intel 2500k/ decent reviews on newegg and amazon.
A 2500k is not overkill for any kind of gaming. WoW and SC2 will actually benefit from the faster CPU. However, if you don't intend to overclock any time soon, you wouldn't notice any difference between the two at stock speeds.
lets say i upgraded to the 560ti. Would that still work with my motherboard?
Upgrading to a GTX 560Ti would be a smart move if it fits your budget.
650w PSU isn't "necessary", 500w would be enough for a 560Ti build. However if the price difference is minor (you said there was a good deal on the 650w corsair unit) then by all means go for that and give yourself a little more headroom for some big over-clocks.
Over-clocking your GPU will be very easy, especially the 560Ti. Using MSI Afterburner is the way to go here.
The motherboard you listed has support for SLI/Crossfire graphics cards. Now in order to make use of SLI, With a 560Ti your going to need 750w PSU in order to add a second card. Alternatively you could buy a cheaper motherboard and save yourself a little money. One of the cheaper Gigabyte Z68 boards would be a good choice should you not require SLI support.