Need advise to integrate Balena OS on a new board.

I need an advise for a things I want to do.

I need to integrate Balena OS on a new device board from developed by NXP.

To do that, I know that I have two ways to do that :

I think the second option is by far the best option since I already have a working Yocto. If you were in my place, what choice would you make ?

Maybe my question contains the answer but I just want to have your opinion. Maybe I just need reassurance.