I'm new to the wii modding scene and I understand the kit is not targeted to newcomers.
However, I was able to get it up and running.
Thinking about this more, my thoughts/suggestions might make more sense in a build log.
I completely missed out on the discord invite (I was confused why I couldn't find it online, but just saw today the invite is on a sheet in the kit

)
Some minor things:
In some of the photos, it showed alternative wirings compared to the instructions. This is fine, but at some points I was second guessing myself.
1) Step 13 - Wiring Wii
At the end, it mentions putting thermal paste and screwing the board onto the case if not doing the bluetooth relocation.
This is fine, altho you will need to remove the board again to access the 1.8V in step 16 - Wiring Audio.
Very minor nitpick. My concern is ensuring I don't strip out the posts given they are 3d printed and we're using machine screws. Side note, some of the screws from the Wii disassembly are a perfect fit for this and has a better bite into the posts.
2) Step 14 - Wiring the Controller
I couldn't find the "included GC+ 2.0 Configurator", but figured it was something you could download.
3) Step 15 - VGA
The instructions make no mention of the twisted pairs for the signals. Altho the pictures show them -> initial thought, are these alternative wirings?
I assumed they were necessary, but didn't know the importance for them until further research.
Testing VGA - It wasn't immediately clear to me that the mode pin toggles between VGA and composite. I thought it simply enabled VGA.
My silly expectation was changing the LCD source would allow me to see composite _and_ VGA outputs.
It didn't help that VGA out still leaves a lot to be desired, so I couldn't tell if I had actually switched over to composite.
Anyhow, it was a fun but challenging build. Thanks to
@Gman and team, and the rest of the community for info and help!