The board doesnt support triple channel memory, go with this:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820220331
Can get a modular power supply for the same price:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817189011
Your motherboard supports crossfire and not sli, get an ati based card such as this HD4890:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814125276
Never heard of that power supply brand.