https://ca.pcpartpicker.com/list/nW6ByX - 660 - Better long term purchase, relies on integrated graphics for now, but can add a dedicated GFX card later for better gaming performance.
https://ca.pcpartpicker.com/list/GHsKNQ - 650 - Will game better now, but fall off down the road much faster (less ram, worse cpu, weaker power supply, no ability to overclock...)
https://ca.pcpartpicker.com/list/yzsKNQ - 790 - Future proofing of first build, with the better graphics quality of the second build.
https://ca.pcpartpicker.com/list/xcPf29 - 770 - Same as second build, but better graphics card for more money.
IMO, get the second build. It will get him by for at least a couple years, and at that point he can just upgrade the GPU, the rest of the system will still be fine.