"Maybe there's some sort of unskilled labor that you can do, but no one is going to hire a green person to move boxes around. Theology is great, but it's not like -- whoever was in charge of Voa in 3112 -- is going to hire a random theologian without any provable credentials to advise them, at least not without substantial work.
...But yes, getting the city sounds like a good idea, as is learning the language."
He mentally lists everything else in-caste that he could plausibly do. His other two roommates are an author and an illustrator, but he can't write stories especially well and he can't draw at all. He might be able to learn how to write stories, or plagiarize a book that he'd studied in school, but even that would only get him content, not style. The only instrument he could play competently was the theremin, and that seemed unlikely to have been invented yet; he could learn another, but buying an instrument and paying for lessons would require money.
Maybe he can be a scientist and make discoveries by virtue of having learned about them in school, but that will require remembering both major scientific discoveries well enough to reconstruct them and when they were discovered.