New to Buidling Game Rig Help!

Hello all, first time post here. Im in a bit of a dillema. I am building a first time gaming rig. I was able to get an i3 2100 sandy bridge for dirt cheap so thats the cpu im using. Heres my build specs:
Case: COUGAR Solution Black Steel ATX Mid Tower Computer
CPU: i3 2100 sandy bridge
PSU: COOLMAX ZX Series ZX-600 600W ATX12V v2.2 / EPS12V v2.91 SLI Ready CrossFire Ready 80 PLUS Certified Active PFC Power Supply OR

http://www.newegg.com/Product/Product.aspx?Item=N82E16817159125, considering this one because its 25 bucks after mail in rebate.


RAM:G.SKILL Ripjaws X Series 8GB 240-Pin DDR3 SDRAM DDR3 1600
Graphics card: EVGA 01G-P3-1561-AR GeForce GTX 560 Ti

For the mobo i have know idea, im thinking:
http://www.newegg.com/Product/Prod [...] qe989tl07t

http://www.tigerdirect.com/applica [...] viewsBlock

http://www.tigerdirect.com/applica [...] =B450-7700

any help would be greatly appreciated!! Thanks!!

you do know that you have to pay upfront the full price then wait 10 weeks for your Rebate less shipping right?

can you list the parts that you already own, and the max budget you can spend on the remaining parts

after you do I'll give you my advice on what to get and why

Sorry bout that, i didnt really think about waiting the 10 weeks, good point.

I currently have:

Intel Core i3-2100 Sandy Bridge 3.1GHz LGA 1155

G.SKILL Ripjaws X Series 8GB 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800).

I want to spend a max of $550. Thanks alot, i really do appreciate it!

Initially i was going off of the video of building a gaming pc for $550, but i thought if i did some shopping around, maybe i could get some deals going.

Jesus, you got relpies in like ten minutes, no one helps me... 

poor homestar runner

Well, i guess its just being in the right place at the right time

 

Kinda want to buy my motherboard and psu soon, so any help would be much appreciated