Ah, Tropico. It's a fun city builder; one of my favorites. One of the few I'm any good at, too. I've only got a handful of DLC packs, but one that I do have, the Cement Plant DLC, comes in handy. It's an industry building that produces a refined product without needing raw materials. Decent way to make some money early on. Having access to iron and building a weapons factory breaks the game though, in my opinion. With enough mines feeding the factory, you'll be rolling in the money all the time.
I usually go the Benevolent Dictator route.