Which of the following edits best modifies the passage?

1.We had been searching for the treasure for months. 2. I had wanted to be the captain of a ship sailing the high seas since I was a child. 3. Our rations and clean water were running low, and, thus, so was our time. 4. I climbed to the crows nest to search the area again, and I hoped this time would not be in vain.