Okay, if you don't need SSD or GPU, you should be just fine with your build. However IMO we can make it better:

1. Seasonic PSU

http://www.czc.cz/seasonic-s12g-550-550w/145290/produkt

It's a solid product, from trusted company. A little more expensive than the other one, but saving money on PSU isn't a good idea.

2. Make sure your RAM will fit under the custom CPU cooler. These things are huge and take a lot of space on the mobo. Kingston's radiators aren't very tall, so I think it won't be an issue, but you can't be too careful.

3. Consider getting another case. $25 cost of this one makes me very suspicious about it's quality. Remember that all cases are standardized, ATX is around since 1995. The case you buy now can be used for several other builds in the next 15 years. $25 cases tend to cause problems with heat, and often become noisy after 1-2 years of usage. You know, that annoying vibrating sound coming out of nowhere, which stops for 10 minutes after you kick the damn thing. ;)

I recommend Coolermaster and NZXT cases in particular.