I'm 15 and am building my own computer. My parents will pitch in about 450, but the rest is mine to buy, and I have around $600 stashed away in my bank, but I would rather not completely blow it all. I play Skyrim, TF2, LoL, and Minecraft. I have a god gaming monitor and a logitech m570 trackball mouse(which, yes I use for gaming). My laptop is awful for gaming and I want a whole system build including the operating system (preferably Windows 7 home premium 64 bit). So I need a CPU, case, graphics card, etc. Please build me a system!