I think i'll be okay with self-restraint between balancing gaming with school, and work. This will be my first dedicated gaming PC, and the pros are in my favor, such as, cheaper games, I won't have to get used to different button layouts, and when its not in use gaming it won't be a paper weight. I've had a bad addiction with Halo 2/3 in high school, and got pretty addicted to skyrim, but I was younger then and had no desire for anything other then self-enjoyment.
I spent $1500 on the PC and $800 for the new monitor, you can honestly spend $600 and get a gaming desktop excluding peripherals that will run almost every game. I have to disagree with you on needing to make a PC future proof, one of the best parts about having a PC is the ability to upgrade in the future.
I agree, almost. You need to plan ahead if you intend to upgrade in the future. A build should be based around two things, a CPU and a GPU. A good GPU can be the most expensive thing you put into the build but isn't the only factor in performance. The MB you choose to use must fit with your CPU socket type, and in order to upgrade your CPU in the future you almost always need to use a new MB. With a new MB you need to get a new OS. That leaves your GPU, power supply, hard drives, and ram. At this point your GPU is likely to be out dated unless you've gotten a high end one. For example; two years ago the GTX560 would be considered a good mid level and inexpensive GPU, but now, won't run recent games too well. So there you go, in order to upgrade anything that may have been slowing you down, you virtually need to replace half of your computer.
EDIT: Sorry to start leading this off topic. Congrats on the pick ups.