That's good only if you want to overclock. Since you said you don't wish to overclock, you don't need an unlocked processor, a Z87 chipset motherboard, nor a high end heatsink.
I would try to upgrade the case to a Define R4 or at least the Corsair 300R. Even the 300R is a good upgrade over the 200R.
For the psu, I would recommend the XFX unit because the Corsair CX units aren't that great.
For a good gaming keyboard, that depends if you want a mechanical keyboard or not. Mechanical keyboards are higher quality and last longer than those cheap rubber dome keyboards and feel a lot nicer (to most people at least) but they are more expensive. If you do want a mechanical keyboard, it depends on what switches you want. The most common are Cherry MX Blues, Browns, and Reds. You should do more research on the different switches and maybe even go to a local computer store (Frys, Microcenter, Best Buy, etc.) and see if they have any mechanical keyboards to test out.
For the most, I like the Steelseries Sensei Raw, Razer Deathadder, or Logitech G500s.