After spinning in circles trying to find some way to do a language school and have dental work done in the same time frame, I think I've found the answer in the language school of Personalized Spanish. They have coordinated dental work and classes before and also seem to cater a bit more to non-traditional students (i.e. "older") which I am. Additionally, they will compress my class schedule to 4 days so that i have long weekends for exploring the rest of CR.
The last piece of this puzzle is now picking out a dentist that is somewhat close to the school which is in Tres Rios. The school itself recommended Dr. Longar but I've seen nothing about her anywhere on the web. That makes me a bit nervous!
Any info would be appreciated. Thanks.