To answer your exact question. I did this build recently that is actually very similar to yours, but it uses only 1x 8GB DIMM to save money, a cheaper, but somehow the same harddrive, a better case, and it uses a hyper threaded i3 instead of an FX-8350, and an R9 270x for graphics.
http://pcpartpicker.com/p/9ZYxvK
FPS in Minecraft maxed out with extended view distance while recording: 90-180 while recording, up to 300 in a cave.
When not recording: 150-300 in open air, up to 900 in cave
^Not like any of this matters as your monitor doesn't display above 60 fps.
CS: GO FPS: Maxed out, 1920x1080, easily above 60 with an R9 270x.
Far Cry 4: Maxed out 1920x1080 with hairworks turned off an AA at MSAA x2, it hovers between 28-60.
My rationale for changing the FX-8350 with the Core i3, is Minecraft can only take advantage of two cores. It is not a game optimized for multicore, so you want the strongest single core performance you can get for Minecraft, so the i3 was a no brainer vs the FX-8350. It also will run cooler.
Video card is quite a bit ahead. The GTX 750 Ti is on par with an R7 260x. The R9 270x is much better.