You know for gaming, the i5 7600K is as good as the i7.
This Cryorig C7 is too small and unknown, find something bigger.
I don't trust any 500w psu at $40.
The GTX 1070 is probably enough for a 2560X1440 resolution.
MSI motherboard are good but Asus or Gigabytes are better.
Maybe you can begin with the inboard (motherboard) sound card and see how it goes.
You have a TrackIR?