Do you really need that SLI motherboard? Because an A8N-E has SATA II and everything else that SLI board has, without the second pci e 16 slot. Its also only about 92 bucks at newegg. The Antec Neo is also not really a neccesity for 91 bucks at least, you can get a really nice PSU for much cheaper.http://www.newegg.com/Product/Product.asp?Item=N82E16817103937
And for the processor/graphics card, it depends on what your going to do. If you are a gamer then you have diffrent needs than a typical office user.