Hey Icecool,
To be honest I don't know anything about the dominican republic - so I can't say there's anything wrong with it.
I just think that normally you'll find profitable areas nearer to home than that.
For example - take last year you probably had people buying in all sorts of places around the world where probably the best returns of all were 2 hours up the road in Northern Ireland with little or none of the risk.
You could easily be paying way above the odds for it for example - It surely must be difficult to pin down the market value price per square foot from this distance.
That said if you have done your research and you are happy it stacks up then all the best with youfr investment.