Yeah, book out in May it seems.
Due to the lockdown and as a nice distraction I jsut watched the clip you posted.
Try typing white beanie hat into Amazon its a fold over so will be longer than it appears and looks quite fine thread. The suit jacket seems to be a classic wide lapel single breasted type jacket/blazer (with cufflink holes), because its early 80s then it will be a 70s cut I would imagine. He wears a 70s big/pointed collar shirt with collars out.
Gonna be tricky but google will be your friend in this case…good luck.