My first question would be what is prompting a move? Are you running from something or running to something? Why Puerto Rico? Have you researched taxes, housing costs, food/utilities expenses etc. Have family there?
I'm sure there would be someone to work on machines and ways to get fabric. Just might cost a bit more. Quilting might not be a huge thing due to the warmer, tropical climate. You could make "Summer Quilts" and save a bundle as they have no batting.
I would recommend you do a short term lease on a place down there, in what they consider the worst time of the year. But then I'm old and cautious. LOL