This too is one of my most wanted. They could probably do slotts solo run in three (big time, superior, worldwide), but the first and last would be large, around 50 issues apiece give or take.
Edit: Eh, seems v3 and v4 plus up to and including 802(?) would probably be too much. Might include Relevant Spider-verse issues and the point one stuff to fluff a post SSM omni, but then you're not really getting much outside the ohcs. Maybe throw RYV (secret wars) in to pad it out. Either way probably 4 total