would like to know where you teach? well aside from this youtube videos you upload! thanks much!!

I'd advise adding 3 to 4mm from the 12th fret wire to the center of the saddle. Your idea will work mathematically on paper but not in real life due to certain dynamics and angles. One in particular, for example, is that "half a string length" is twice as heavy as the full string length length changing the momentum of the string. ... After that then compensate the saddle (the thicker the string the further back it should go).

What is the actual measurement between bridge and nut?