Hey 'kid'. I am the same age as you and I specced and built the rig in my sig without asking for advice from anyone, just based it on my own research. I built it for about £20 less than what your system cost, and this was 15 months ago. It still stomps your spec into the floor from every angle, with the exception of the GPU which still beats yours by a small margin. Also bear in mind that I have a sound card, blu-ray and an SSD. (the 2tb HDD was added after)
You may also like to note the clock speed since that seems to mean so much to you, and the cooler which is keeping it at that speed cool and stable, which is not as good as yours. Also note that the 2500K at stock speeds is still better than the FX-4 by miles and miles, and mine is overclocked considerably. I do rendering, 3D modelling, gaming, video editing etc, you name it, I probably do it. I can do it at a faster rate than you can, and I have been doing so for over a year. Also my GPU has CUDA cores which helps for this, just as yours does, and my GPU is a power hungry beast which draws a whole lot more power than yours, and I have a 700W PSU. Yours would have been fine on a 500W PSU.