Haven't updated this in over 2 months so here we go:
I wasn't able to make the 6 layer work, neither the 4 layer i had at home. The 6 layer was put to side and the 4 layer was shipped of the BocuD for inspections, he has been a big help over the last couple of months so big props to him! But after getting some neat infrared camera pictures of my board from him he declared it dead. We worked out a deal and he shipped a working one back for me to work on
I've been slowly getting all parts in / ordering new ones over the last weeks, i currently posses everything that i need besides a fitting barrel jack for my case. As for the case i currently got a white G-wii printed by again, Bocu, but stupid me send the wrong top half STL so my neighbor was kind enough to print it again on his Ender cr-20, but print difference is huge between Bocu's lol.
Currently i have a trimmed Wii with USB connected, Bluetooth reconnected, Display connected and a powermii lite to power it all on. But the issues i have right know is that the bluetooth doesnt work, have tried some stuff with people over at discord but nothing works so far, gonna try rewiring it today or getting a different module from a other wii. Usb also works 50% of the times, guessing because the wires might be a bit long? But if i get everything working im gonna put it all in the case hoping this weekend to finish my project!
edit: Also over the past couple of months i have destroyed a good bit of electronics i would hope to save / fix after this project after i get some more experience under my belt, for example:
Eyoyo driver board, used a hot air gun and got the 40 pin connector off, and soldering a new one is a bitch, havent gotten it to work, so might have destroyed more too
An basic 5" inch screen from ebay, i had it on a box when testing my 6 layer and the controller peace with buttons fell and a exposed wired from the batteries touched which killed it lol
The PMS doesnt work right now because its shorted, Maybe because i used a soldering gun first which was a bit to big, or a shorted wii killed it? havent found out but i've definitely learned to get some good Tools like a hakko 888d, helps a ton X)
Edit 2: I got Bluetooth working and USB seems to be alright too!
I rewired the data lines and used a different Bluetooth module which seemed to do the trick! Thank you all guys so much for helping so much! It's been a blessing