I would go with the first option (GTX 960m) because you dont ned more then 8 GB of ram when gaming, but less then that it can be a problem.
If the GTX 860m is also GDDR5, it can be a even more difficult choice. (I would personally anyway go with the GTX 960m). You dont´t have to think about wich processor, because the i7 4710hq is more then enough, and the i7 4720hq isn´t that much of a difference.
So it´s up to you if you want a slightly better GPU or an SSD.
Hope this helps
