The case comes with 2 fans. If you find you need more in the future, then buy more.
Now is this for gaming only?
If so the i7 is not going to help you anymore then an i5
The 16gb of memory is not necessary, 8gb is plenty
750w psu is overkill for a 970, you could get by with 550, 600-650 being ideal.
WiFi will be undesired for gaming, if you can not use wired ethernet then a 500-600mbps powerline adapter would be much better then wifi.