It would be impossible to guess what Costa Rica's laws are there...but less than 10 years married usually gets one very little, depending on the circumstances, such as how different their salaries/worth, may be, how long it may take to get on one's feet, if one party stayed home to raise the kids instead of furthering a career, etc.
But if he's very wealthy and you are not, it would be more than if you both were on the same level.
$2000 for how long? I'd ask the lawyer how easy it would be to enforce- given Haque - being so far away and a different country. Those here in the US often find the issues are worse if not in the same area to bring contempt of court charges if he doesn't pay, etc.
That's why I would opt for something NOW if possible, and save yourself some possible future headaches. Often parties (and their new gf/spouse) decide they made a bad deal once you've gone and make things as hard as possible...which is easy to do when you're thousands of miles away.