For a 3900x+2080ti combo, I think is pretty balanced and a great build.
My only and personal changes would be to change the cooler for the be quiet! Dark Rock Pro 4 (25$ more) and change the 2080ti model for a same $ but triple fan, like the gaming oc or winforce gigabyte models.
I’m trying to find the other 2080ti but I can’t.can you put a link to it on amazon or something?
See this: https://pcpartpicker.com/forums/topic/345753-some-items-are-grayed-for-the-buy-even-though-they-are-in-stock
Gigabyte GAMING OC