I'm using a 650W PSU from be quiet (the straight power series) and I'm using more power consuming compoments than you are (R7 3800X + 3070) and I don't hear my PSU. I know you said you want to overspec but honestly save yourself the money, get a good be quiet one and that's it

If you're underusing your PSU, that's also not good since its efficiency will be worse. But if that's no concern for you then feel free to go for the overspec

Yeah, it feels like a lot is breaking lose right now, it's crazy honestly