>>269044105
Not him, but I've got a friend using VR with a build similar to this, and he's never mentioned having any issues.
https://pcpartpicker.com/list/ZCTZ8M
You can cut more corners and pick up used parts to get the price down below a 64gb Quest. You could also grab a used 1070 instead of the 580 for better performance and still stay under the 128gb price.
That's ignoring the headset cost though, so Quest still comes out a lot cheaper.