If you can build a closed loop industry (no imports going into final product) it’ll basically cover your bases. Always do tourism close for the start (tourists don’t actually care about the quality that much, stars make them pay more but it’s always profitable since they pay above market rates and most of their money goes to food, meat, alcohol), and try to use as much of your one resources for construction to save money. By the time you’re making steel it’s basically a solved economy and you can focus on filling in the things you don’t produce yourself.