You can customize the dimensions to fit your setup. In the FreeTrack software, click on the "Model" button at the top and you will see where you can change the measurements. For example, I changed the numbers to match what I made for my cap.
You will need to have one single LED further away from the webcam than the other two LEDs in order for it to work. This means, you can't put all three LEDs on those glasses. One of the LEDs has to be further back than the others.
With your glasses you should use a 3-point cap or 3-point clip. I'd recommend the 3-point-cap since the glasses you will be using are close to that spatial arrangement already.
Good luck!