I can provide the cps2 B board for you about $60 us, however, the shipping fee is too expensive (cost $43-45 us).
Also, I have the multi-kit label for cps2 which costs us $8 for each and shipping fee costs us$5.
If you are interested, let me know and it can be combined shipping.
No thank you I'm good for now but maybe later
EDIT: I have no idea how the wall system works