Purchasing samples from Gowin turned out a long journey. Initially they were supposed to be here by Oct 10, chasing them now and their current status is still unknown. All other parts in the system have been sitting in a box and waiting for that most important one to be put on the board first.

Anyway, I just published the early version of the schematic in the open. Keeping fingers crossed there won't be any mistakes there. 

As always, feedback and suggestions are welcome!