I'd go with as classic and conservative as you can get.
Navy suit, white shirt, maroon tie (half windsor), pressed clothes and suit (heavy starch on your spread collar), and shined shoes. And get a haircut (no product, Frankie).
No French cuffs, cuff links, pocket squares, suspenders, tie pins, man jewelery, or cologne.
This post was edited on 10/3 at 7:29 pm