While it is not impossible to setup Gentoo Linux on a machine like that, I do not know whether it is worth the hassle. I would just go for Linux Mint or so (would be light enough, esp. their flavour with XFCE).

Please read what @OprahsedCreature@lemmy.ml is actually stating.

That they would design and flesh out RISC-V chips was only a matter of time.

Off-topic: Eh, is that a Google AMP link? I did not expect those here on Lemmy t.b.h., not meaning any disrespect.