help kicking off a project with the right foot

Hi all,
ahead of going in the wrong direction I would like to share a project and seek suggestions on the most elegant and efficient route to follow.

The idea, given a large number of shape files, representing areas on a map.
Create a visualisation where each area is coloured based on a certain parameter (into csv file) and allow the user to interact with the map by clicking on each shape, navigate in 3d. Once the user clicks on a shape this activates a sound.

I am thinking as follows, create a bunch of obj files into a folder and programmatically add them to gl.world. Then colour based on the values form the csv with a uzi or similar.

Then -somehow- get the group/object name from the mouse click within the opengl view

Fire a message to the appropriate sound sample

Any pointer for the above?
Something NOT to do, something easier, etc?
A way which I considered was to do the graphics in processing and then the sound in Max, or use Touch Designer.
My biggest issue is dealing with meshes in max and the clicking/getting the name/play the sound part of it.
HELP HELP HELP
Thanks
G>