Help with starting with SubModule

Hello all im looking at euroblocks and Kivu12, i want to make a multiple lfo module with the SubModule.
So the way im thinking about it is either i buy/build the kivu12 or i design my own circuit board.
From my understanding the carrier board is essential ; what if i just solder for the example the pots/buttons/jacks on the SM where i want and just mount it on a panel, that would also work.
So why use something like the kivu12 ; It just makes me solder less this is getting a bit overwhelming sorry.
I already have made some puredata patches that i want to transfer to the submodule and just connect the pots/buttons whatever i need.
Sorry for this again ahah

I think it’ll be good to keep this conversation in your other thread so that’s it’s all in one location: Any examples of Patch Submodule ;

As mentioned in that thread, referencing the Patch.Init() design will be a good start.