you're spending a lot on the case considering the budget. Something around $50 seems more reasonable. Saw this one for $40, it's a little taller than the one you listed but the other dimensions are about the same.http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3860523&CatId=3427
edit: here's some cheaper ram too, 4GBx2 corsair 1600 CL9 for $40http://www.newegg.com/Product/Product.aspx?Item=N82E16820145345
Also, if you live near a microcenter, they have the AMD FX 6100 for $110 or FX 8120 for $140 plus $40 off a motherboard when purchased together. I know you said you wanted to keep the CPU, but it seems like a good deal to me.
Here's the link for thathttp://viewer.zmags.com/publication/552f2167#/552f2167/29