Scan, Overclockers, Aria all do either bundles or systems. Have a look at those, then post back here with something we can look at and edit accordingly.
I think the M2 SSDs will eat up more cash - I think that a 500Gb Samsung EVO and a 256Gb M2 SSD are nearly the same price for instance.
Its universally recommended for an Intel build as well (sadly, we would love some competition from AMD) so make sure you select an i5 or i7.
You could but since he said light gaming I'm assuming he wants to do more productivity so he could use the money for a good 500gb ssd or something.
For example if he just plays overwatch or wow/ Dota type games a 1060 will be more than fine