Really? They have different names tho
yeah the 3600x is quite strong for a 980, he probably could have gone with a 2600
The case has both a headphone and mic jack. For oculus rift an RX 580 is recommended instead of an RX 570, but a 570 might be acceptable. If you want to go the 580 route, the 2200g shouldn't bottleneck it.
Your best bet will be getting an RX 580 instead of and RX 570