"No, because Shiki confronted Roger regarding him finding a certain Ancient Weapon.
It can't be Poseidon or Pluton.
So Uranus is left, and Roger finding Uranus that is supposedly in the hands of Imu isn't realistic." This is not quite right. Shiki and Roger didn't specify. For all we know, they simply meant the Dyna Stones which exist in the extended One Piece universe.