Ok. I was mainly asking because we have Seadra in Mid, who has a noticably higher Special, and the only advantage Golduck has over Seadra is better physical attacking capabilities (in terms of both stats and movepool). However, if you don't use them much at all then it would be weird to put Golduck above Seadra.
But there are a lot of pokemon that are either Water or Psychic type late game so I suppose it's ok. I can't imagine Seadra getting that many notable kills that Golduck couldn't anyway.