Defining if a thing is difficult is as well difficult as it depends on the person. You do have the documentation and videos on how to set TouchGFX and the TouchGFX Generator for single core MCUs as shared. The dual core just implies a more complex structure and a more complex STM32CubeMX file :downcast_face_with_sweat:. This is the time consuming part in my opinion, because otherwise most of the user code is already set in the TBS for the STM32H747dk so it can be copy pasted or used as source of inspiration/base for other files to set. I believe theere will be other settings to do with the toolchain you use.
It is an interesting thing to do, I don't have the time to do it in the coming days but it is something I can try to do if you have 2 weeks.
/Romain
