If I understand your scenario, you should be able to do this with the
most simple, obvious setup with all three of the 14-3's insulated wires
used. So, either:
- I'm dumb and don't understand your scenario
- Your not doing a great job explaining what you are trying to do
- You don't see how to do the most simple, obvious switch wiring and
so probably should not be doing wiring on your own.

-Kevin