You're fine with the list you picked at first. It'll play 1080p medium/high settings pretty smoothly. I would really overclock your 8 core fx8120 though. I don't see many people with bulldozers CPUs around much, it was honestly a step down from the older Phenom II from 2009. It's only 3.1ghz , get it to ~4ghz and it shouldn't be THAT horrible in gaming. Plus it'll age more gracefully due to the 8 (although weak...) threads compared to the dual core everybody seems to be drooling over today.
I'd honestly take an overclocked bulldozer 8 core over a dual core nowadays. Pretty decent build overall, you should be pleased with it. Just follow some overclocking guides, Asus is really solid, I'm using one of their monitors and dvd drives(lol more of a relic nowadays...)
I think you'll like that Cooler Master Devastator blue LED keyboard. I've been using it for months now, although I hated the mouse it comes with lol. 30 bucks wasn't bad. It feels way better than the new expensive 138 dollar Razer blackwidow ultimate 2014 keyboards I tried in person at the store the other day, they felt like typing on loose mushy potatos lmao.
The CM Devastator feels good though, it's regular membrane keyboard but it really does feel solid and tactical.