moving from USA

I am looking to move from the USA and am not quite sure where to move. I have looked into Belize, Guatemala, Jamaica, Bahamas, and will be looking into Nicaragua. Any info on any of these places will be helpful. I have not visited any of these places personally but after getting all the info I need for them, I will travel to one place for vacation before moving to make a better decision. Here are some questions I would like answers to if possible:
1. jobs? are they easy to get for non citizens
2. cost of living-is it higher than US
3. becoming a resident (i know would take time)
4. banking systems
5. climate
6. housing
7. health care
8. any other useful info needed and if anybody has any experiences they would like to share

Also which place would be better to move to?
We are looking for a place with a low cost of living, available jobs (most important), we have no kids right now, but we do have pets so obviously they would come with us. Also we would want a place where renting to foreigners isn't hard since we would not have jobs in the beginning to get our own home. Again any help would be nice...thanks

And again, I do know I will need to travel to the place I want to move. We are looking for tropical weather. Nothing to hot or cold.