Swapping out an ST series zone control to model NCM-3z zone control

[Davi S.]

In a similar situation to other threads here, I fell into the trap of purchasing Nest thermostats only to find out my zone control board (ST-2E) was not compatible. I ordered an NCM-300 upgrade board and had planned to perform the upgrade following the appropriate technical bulletin. However, I got up to labeling my wires before noticing that the board I was sent was a NCM-3z instead of the 300 model (which appears to have been discontinued and replaced by the 3z). I've searched for a similar technical bulletin for wiring up the 3z board, and have found the manual, which contains detailed diagrams for various heating/cooling configurations but no direct relationship to the ST series boards. Therefore, in order to mitigate risk of damage to my system I wanted to run my rewiring plan by you guys before going forward with the upgrade. Please see the attached images.

Specific questions:
1. Do I need a new Common for System? NCM-3z manual shows one but the ST-2E did not have one connected.
2. Is my motor/damper configuration correct? Anything else look off/out of place?
3. I do not plan to use the orange and blue wires that are currently connected to the board at Zone 1, but will add a new Common to Zone 1 & 2 if required by the thermostats (The blue wire at Zone 2 was added in such an attempt as I tried to troubleshoot why the new Nest thermostats were not working).
4. Anything else (unknown unknowns) that I should watch out for?

I will likely have a followup question regarding optimal installation location of the temperature sensor once i can get pictures of my duct work.

thanks in advance,
Davi