Hi. Need some input about my first campaign.

Hi everyone. Going to start my first campaign of PF2E. Wanted to know any usefull tips, and if, perhaps, thre is a module that i could use for that type of campaign.

Description of the campaign:

The characters were taken from their homes by pirates and are now chained aboard at evil empire's slaver ship. During one stormy night, one of the evil guys turns out to not be too evil and decides to help the players and the other captured people, starting a revolt on the ship.

This all happens during a heavy storm. The characters eventually manage to take over the ship, but there aren’t enough people left to properly crew it, and the ship itself is heavily damaged.

They barely manage to reach the shore of a deserted island with the help of the pirate who saved them. He is either a navigator or a ship carpenter, but he is severely wounded and needs help to survive. If kept alive, he can greatly help the party either with repairing the ship or navigating it to a populated island later on.

The campaign then becomes focused on exploring the island using a hex grid. There will mostly be island creatures and monsters, but there will also be some kind of cult on the island, though I’m not sure yet what exactly.

I also want to add some light survival mechanics, but nothing too complicated.

I am interested if there is a module for something similar that i could use.