>>286918561
The current versions of Knuckles have enough QC issues to not be futureproof, and I don't think Valve is much better than Oculus as far as support goes. Base stations aren't connected by USB, so you don't have to worry about that, although there is more setup involved than the Rift S.
>Any suggestions or advice if this is a good idea?
Index is better, but you're going to get hit hard by diminishing returns and you'll be without VR for close to 3 months if you sell your Rift S now. I'd personally wait, but if you really want to sell your Rift S, I'm sure you could get a little more for it now than you would later.