You mention that you want to throw turnouts via accessory commands. Would you ONLY be generating those accessory commands from the Mini-Panel? Or would you maybe also throw turnouts via your throttle or JMRI? If you plan to use a throttle or JMRI or both, you can't do what you want to do because the LED attached to a toggle won't know the state of the turnout after you use your throttle or JMRI.
