When I see Goons, I think, "is this a light goons game or a heavy goons game?" What makes the difference? Two easy questions: are there extra actions, and is there trashing/draw? If the answer to both is yes, it's a heavy game.
In a light goons game, I want to play goons as often as possible, so I probably buy 2 or 3 depending on the other cards in the game, but I don't expect ever to play two per turn unless I get lucky, and I expect the game to end on provinces/colonies, not on piles. I am happy to buy copper earlier (about when I'd start buying duchy, or maybe a little after).
In a heavy goons game, I want to play goons as often as possible, and I essentially never (not till there's only a couple turns left) want to dilute my engine with green or copper. I expect to goons every turn and be goonsed every turn, and I build my deck accordingly. I build an engine deck, i.e. I trash aggressively as soon as possible.
On this board, there's stewards, which is mediocre draw and decent trashing, and there's city, which will become good draw (the pearl diver pile will clearly empty), and is extra action, and there's shanty town, a mediocre village which is better if I'm expecting to get goonsed every turn. So I immediately classify it as a heavy goons game. I would open steward/steward or steward/shanty town; both are a little risky in the case of collision. I can't fault a steward/silver opening, it's just not my favorite, especially in 2nd seat. With 5/2 I'd be annoyed and I'd open steward/pearl diver. Trash aggressively and never buy gold or green; just be a robot with goons at >= 6, city at 5, steward/shanty town as needed at 3 or 4, pearl diver at less. Probably a silver at some point.