Hey,
@MustaKotka made a deck with a similar idea with Breya at the helm. It was really cool and had some neat ideas. I'd recommend taking a look at that for some
inspiration.
I don't know what the etiquette for linking other peoples decks is or whatever, but you should be able to find their profile and the deck. If not, it'll be under my liked decks.
It's cool and wants to do a similar thing to what you are doing. Breya also has access to white, but
Grixis should have no problem achieving a similar thing.
MustaKotka has also done a great job sorting the cards to showcase their respective role in the deck. It should be easy enough to follow so I won't repeat all of their good work here.
Good luck with the deck though. Seems like it'd be a lot of fun to play. Hope it works out for you. Let us know how it goes.