Recommendation for gaming rig

[ExcuseRMJ]

Hi guys , this is my first time buying a rig.
My budget is $2k. Need os, wifi, SSD & monitor. Dont need kb & mouse.
I will be playing games like sc2, bf4, COD:ghost and gw2.
Since i dont know much about hardwares, i supposed i should be going to pc themes to build? any tips when buying?

 

[Jian19]

Can also go pctheme buy if u wan, just for reference

Another option is pm fortran, tell him ur budget and he customize for u

Delivery + Assemble @ a fee of cos

 

[Jian19]

Casing click wrong

Should be fractal design arc midi r2