This vintage Betsey Johnson sweater is my white whale and I want to just knit something similar myself. Haven’t done color work beyond all over stripe pattern. How would you go about the patchwork?

Would it be more difficult to do the sweater intarsia style or to work each part in a panel, only doing horizontal color changes? I don’t have a pattern in mind yet, but I think I’d have to pick a “normal” pattern that’s not accounting for separate panels so I am not really sure how I would modify to work that in. Appreciate any advice on how this could be constructed!