I've looked briefly at Puerto Rico and spoke with a couple who are in the process of moving to Portugal. Get an understanding of your expatriation tax liability before making any big moves. Puerto Rico has some great tax benefits and let's you keep a US passport. Way too much for a post.

Try a chat GPT prompt similar to "From the viewpoint of a CPA tell me about the tax benefits of moving to Puerto Rico. Include income tax and capital gains tax on US sources. Also discuss expatriation tax."
Under DOT rules, you may pay PR income tax vs US income tax. I am not a professional, so GTS (google that stuff)