>>381908345
128gb is more than enough
if your router is worth its weight in salt and your PC has a direct ethernet connection to it and will be in the room you're going to play vr in there will be no need to buy a link cable to play PCVR games, but you will need to buy virtual desktop (30bux on the oculus store) 
wireless/wired will always introduce latency but for me it's basically unnoticeable, quality is a bit of an issue though.. 
the elite strap I heard is prone to snapping, I recommend buying the bobovr or kiwi headstrap instead and kiwi controller straps