There are two on-line forums with respect to living / moving and day to day life in Nicaragua those not born there. They both contain pretty good information (The Real Nicaragua and Nica Living)
Land purchase should be reviewed with caution – Land purchase and title transfers are not as stream lined as North America. Protection under rule of law can be difficult or even non existent under some circumstances.
If you have not spent time in Nicaragua you should. There is a distinct cultural difference right from person to person interaction right down through business expectations and how to approach government. My opinion is 6 months in country to get a good gauge if Nicaragua is for you.