I want RedNAND as a backup, I followed FlimFlam69's Wii U Hacking guide to exploit, install Haxchi and the Homebrew Launcher, and then most recently to install Coldboot Haxchi. Here is the link:
https://github.com/FlimFlam69/WiiUTutorial/wiki
I would never use a YouTube guide, they are too unreliable. I didn't know if I needed to have Mocha to run homebrew on RedNAND. My ideal setup would be to Coldboot to RedNAND and if I want to use sysNAND, I just press home when booting and select boot System Menu or Homebrew Launcher or vWii if I want to use vWii. As far as I know you can't access vWii from RedNAND. So that is why I'd give myself the option.