Be aware - PCpartpicker links are all well and good but often they are not accurate.
Yoyotech only started appearing in UK PCpartpicker links in the last few weeks - and basically all of their prices listed on pcpartpicker are inaccurate. I'm not saying it's a scam, but I doubt it's accidental.
They aren't the only culprits, so watch out for this.
None of the games you list (bar Tomb Raider or modded Skyrim) are especially demanding, and 1080P display resolution does kinda cap the amount of money you need to spend on graphics - if you were trying to run at 1440P for example, I'd recommend forcing as much as possible of your budget into graphics.
For something compact and straightforward, I'd look at
something like this. i5, GTX770, mATX case, money to spare. If it were me, I'd probably spend a bit more on the case, but it's a really excellent bang/buck build.
If you want to overclock, you do need to step down on graphics as you need to spend more on CPU, motherboard, CPU cooler and potentially PSU+memory as well. For this reason, in most games this will actually be inferior to the first build, but will be significantly stronger on CPU heavy tasks/games. I've stepped up to ATX here too, as it gives you stronger support for SLI/Crossfire if you upgrade the PSU at some point.
Link