You can use any text from the Journeys stimulus booklet.
Try not to double up on the same text types though. So for example I am doing Coleridge(poem) as my set text, so I don't do Robert Frost(poem), instead I look at something which takes a more objective approach to imagined journeys, like 'Journeys over land and sea'(screenshot).
I am a little shocked that we are so close to the HSC and you haven't chosen which texts you're using as support in your essays. If you're still unsure, talk this over with your teacher, that IS what they are there for.