Personally, I would suggest to not install a lot of channels on vWii.
Install only the minimum required channels, because the more you install and the more chance you have to brick.
a channel brick can be fixed on Wii, but not on vWii !
be very careful, multi-check and be sure that the channel's animated banner you want to install is working correctly.
If you want animated banners, USBLoaderGX can display Gamecube games with banners.
you can download custom animated banner animation made by AbdallahTerro, the loader is downloading them by default when you update the covers.
They are maybe not to your taste, but you can replace them with banners you like better if you want.
this method is safe and will never brick your console.