New Acheron player

Hey guys, I started 2 days ago in a new account and although I know sparkle is a much better pull, I still chose acheron cause her design, her ult and lore are quite enjoyable. Just wanted to know, for e0s0, which is better: 2 nihility (welt+pela), or welt + RMC or maybe ashveil (still don't have him yet). I know 2 nihility was a must when she 1st released, wanted to know if it's still true now (also hoping acheron gets a novaflare soon, she deserves it)