There are many ways I could write this but you have rec'd some good advice - don't include yourself on the list (and its a long one) of stupid gringo's who invested in Costa Rica and lost everything.
Seriously, if this is anymore than a fantasy (and if it is a fantasy, I don't like to be a part of anyones wet dream) you need to do the following:
Visit (Jesus....do you know how crazy it is to want to live/invest in a place you visited one time for one week

)
Get as much time on the ground as you can
Forget this particular opportunity - move down, take it slow and over say, 6 - 12 months look - in person - at any opportunities that may interest you.
Trust me - your problem will not be the sending of <10k, but the getting of <10k in the first place (the saying how do you make a million - start with two - was tailor made for Costa Rica) - you need a lot more time, info and advice -
JUST BY BEING A PERCEPTIVE PERSON AND "READING BETWEEN THE LINES" YOU ARE SO RIPE TO BE phucked THAT WERE I YOU I WOULD NOT GO ANYWHERE CLOSE TO PUCHOS BAR (But of course you have no idea what I'm talking about - and that - not Pucho's; I was obviously making a joke - is illustration of problem one)