What is the latest point that a human, knowing the entirety of Star Wars canon and having Force-specific anonymity, would be able to assassinate Emperor Palpatine and restore peace to the galaxy?

This human

• has knowledge of all six Star Wars films minimal
• has a specific connectivity to the Force that camouflages them and their background from any Jedi or Sith telepathy
• will isekai into the Star Wars universe completely undetected
• will have their biology instantly adapt to anything an ordinary human in Star Wars would be able to endure

The challenge is to find the latest, most well-defended point in Star Wars history where this human would be able to assassinate Palpatine and restore peace to the galaxy.