I live and have lived in Miami for 22 years. The job market it terrible. You may get a job at a restaurant cleaning the dishes. You certainly won't get a respectable job at a restaurant. The Hispanic population is mostly Cubans. They ARE NOT friendly towards other Hispanics, especially illegal ones. They feel superior to other Hispanics and most minorities as well.

The rest of the population in Miami consists of Haitians or other West Indian people, and a decreasing amount are white people. Miami is a shit hole of the largest degree.

You won't be living a luxurious South Beach, clubbing-every-night lifestyle if that is what appealed to you so much in the first place. You can forget most late night affairs if you lack proper documentation (i.e., a driver's license). Getting a decent, non-project-like apartment will be a problem. Getting a valid Florida license or identification card is near impossible if you are illegal (they just recently added more stringent requirements over the already stringent ones). Having a car is a must! Public Transportation is horrendous.

In all, the life you live in Texas is one that most undocumented youth would die for. You risk throwing it all away for a largely unfounded whim of wanting to move to a nicer location. (You're not satisfied with the chocolate cake you're eating, and want double chocolate instead).

Truly, you risk losing everything you have, and gaining very little, if anything.