build it yourself, but get the 4690k instead in case u decide to overclock in the future (ALWAYS think about the future).. also instead of r9 290, get the MSI GTX 970 like i did, it's dead silent, runs very cool, and only consumes like 300w I think (so u will only need 500w and above PSU). also, with this card, u will have the option to buy another one and do sli and since the card runs cool, doing sli will be no problem unlike the 290 which in crossfire may run hot. lastly, if u build ur own pc, u will get to choose one of the best parts, the case. the case is honestly an understated component, it holds all of ur other components and usually the cases that come with prebuilt pcs are not that good. For instance, i got an enthoo pro and it is GORGEOUS and only $100, there are also way better cases too. Also, don't get 16gb of RAM unless u really want to future proof ur rig and unless u do editing and such, 8 GB is enough even for massive games like Planetside 2
My build:
Enthoo Pro
i5 4690k
MSI GTX 970
XFX 550W
212 EVO
Z97-A
1 TB HDD (NO SSD yet)
8 GB G SKILL Sniper 1866 RAM
2 SickleFlow 120 LED fans
WiFi adapter
Asus IPS 23 inch monitor that was on sale for $135
GRAND TOTAL: $1085
I did some looking around just to compare my build to other builds like it, and any build with one 970 generally costs $1500 and up not to mention they usually have shitty processors, cases, etc. they also usually don't come with LED fans and 212 EVO's and u gotta remember I included a $135 monitor in my build too, as well as a $15 WiFi adapter. Save the $500+ and build it urself, it took me like 7 hrs to build and wire my system up and I'm realllyyyy bad at doing stuff like this (it was my first build)
I get around 80FPS on BF4 ultra with my build also