Wii U EU modding question

Hi there,

For years of having fun modding my original Wii. I'm going to mod my Wii U European version.
A couple of questions:

I only want to mod my vWii, is this possible?
If not will i still be able to update my Wii u original games (updates/dlc ?)
Currently only own disc games (mario party and Zelda HD games)

What is de best method for modding the vWii ?

Thanks in advance!