>>310433082
You don't at all need more than 64 gigs, or an 80$ cable, or the battery pack unless you want to use it untethered all the time.
You can probably do pretty well with a 20$ cable, or if you have good wifi and do decide on the battery pack you could also go with virtual desktop for the same price.

Frankly, I wouldn't compare the quest 2 to the index, I'd compare it to the g2.
The two are closer to the same price point if you invest in accessories and lit the quest 2 out, and while the index has its issues and it's screen won't exactly be the best anymore it's arguably the most balanced pcvr headset even once the g2 releases.
There's a reason it costs more.