Forget about flying alone, two reasons:
1. Getting your license validated takes forever.
2. You have to know the area very well unless you want to be another statistic and nobody will rent you a plane without local knoledge.
Now the good, contact Everardo Carmona, Jr.(Embry Riddle Daytona Graduate) or Sr. at:
ECDEA - Escuela Costarricense de Aviacion S.A.
By far the best outfit, you wil enjoy flying with either one of them, learn about CR and at the same time you wil be very safe.
Enjoy and PM me for any help.
G