tothergnome :
On fire strike they all get very similar scores so I'd say go for the cheapest one.
The 6300, although it won't bottleneck with a 960, I wouldn't recommend. Games like Arma III and GTA V (all runable on a GTX 960) are a little more CPU intensive than others and a 6300 will hold them back. Not that its a bad CPU, but I'd recommend getting an upgrade. If you have the money, maybe go for 4460 and 950/960 or even a 6400 with a 950/960.