yes it is, BUT whole mobo/ram/cooling combo is more expensive, not everyone knows how to overclock, delid cpu, use beefy water cooling etc, its wayy more hustle, and I dont believe that he has enough experience for that with all respect. Also K version should be paired with 1070ti or above to be fully utilized, this is more balanced, and fits the budget perfectly.
Performance wont suffer obv, and he will have more quiet and cool system.
Also he will use his pc for rendering and such obv, so 16gb ram is more than obligatory.
1060 is more than enough for 1080p gaming tbh, he wont suffer ;)