Assuming no Tactician we would need 4 Wharfs, we can't play all of them without KCs. We might get a KC with Baron or Coppersmith. (some kind of)Village-KC(Wharf) Wharf gives us 13 cards next turn.
But (Poition)Caravan-Golem-Tactician-Wharf should also work.
:edit: Caravan-Village-Wharf-Tactician of course does it with 4.