First thing you will need to do is partner with a Nicaraguan. This will allow you to move through the system much easier and he or she can find out exactly what you will need to do. The computer system here is nonexistent so you might need to pay tax bills twice etc. I do this kind of stuff all the time.
Let's talk about money and payroll. This by far has amazed me the most. People here don't consider money to be God. They will work for you but it's not money driven or based. For example in America if you work in Texas and get a job offer in Seattle for more money you would pick up and move without question. If you were making $150k and were offered $250k, there is really nothing to talk about except what neighborhood do most of the employees live in. Here I can travel to one city and offer twice or even three times the money a worker is making and they don't want to move. Imagine making $50k and someone walks into your work tomorrow and offers you $150k with a paid for apartment in a happening city with food & drink included. They say "thanks but no thanks" I get this all the time. In the US or Europe if you don't pay the mortgage you are put out on the streets. Here that's not how it works. Family steps in here and helps in every way possible and having no money is just part of the culture.
I'm not speaking from a single city in the middle of the country, I travel all around this country on a weekly basis. From Grenada to Estili every single month. I have friends and contacts up in the mountains of Jinotega and on the beaches in Poneloya. The vibe I speak of is prevalent all over the country and not just in one area.
