My wife and I are building a computer for her for gaming. I haven't built a computer since the mid-2000s, having gotten lazy for many years, and now I have no idea what I'm doing.
We've been relying pretty heavily on this site for help so now that we've picked all of the parts we were hoping that you guys might be willing to give us some feedback...
Still under budget, slightly better performance. 2 x 4gb's of Ram instead of the 1* 4gb and 1*8gb stick. Better PSU in terms of quality and wattage rating, also semi-modular too. Solid case to enclose it all. 750ti for about the same money as the 650ti you had listed. Dropped the extra case fan, since you really shouldn't need it unless you wanted a glowy effect somewhere in the case. You could also opt for the 300r w/window for just a bit more if that's more in-line with what you wanted aesthetically. Solid Cpu/motherboard/cooler, so no need to change that up whatsoever.
I don't know of any reason to buy the Pro version of Win8.1 myself either, so dropped that down as well. Room in the budget for a 1tb drive and dedicated 120gb SSD too, so upgrade there.