It takes to much work and i dont want to ruin the wiiwhy don't you want to download homebrew?
There’s a really simple way to install Homebrew on Wii nowadays.
If you’re on a normal Wii, use this https://wii.guide/flashhax.html.
If you’re on Wii U, keep digging.
I use homebrew and it is not anymore sketchy than stage builder method plus it loads fasteris this actually real. it just feel super sketchy