barone44, You have a colossal up hill battle here guy.
You should just try and acquire new firearms after you arrive and even then its going to be tough for a while. You'll need to acquire residency to get the permit and as far getting a job in Law enforcement in Belize, that makes me giggle a little. Come visit, look around and talk to some of the people in law enforcement.The pay is insulting. If you became a citizen, which is a huge task in itself, you might get a volunteer advisory position.
I'm trying to be negative as I can about your chances of this being a reality to help you with this foolish idea.