First Build ~$900

Hello, I am about to build my first PC. It is probably going to be used mostly for gaming and some semi-intensive cad/3d modelling. I plan on buying everything but the GPU now and wait for the R9 series to come out. I'm mainly unsure about the RAM and PSU, but any suggestions would be helpful.

 

http://pcpartpicker.com/p/1K9PW

Some Suggestions:

Cooler: Hyper 212 Evo.  Can't beat it's price to performance ratio.  It beats some low end AIO coolers.

http://pcpartpicker.com/part/cooler-master-cpu-cooler-rr212e20pkr2

PSU: 550w is all you need, even with a GPU like a HD 7970.

http://pcpartpicker.com/part/xfx-power-supply-p1550sxxb9

Ram is fine.