tripenfall on 20 November 2013
Don't forget that by accessing your Wii menu on Wii U then going to the Wii Shop there are a ton of retro games, including heaps of N64 titles. This will help you out a lot.
I totally agree on GameCube titles though - Nintendo should do this asap. Storage won't be an issue as nearly all GC games are under 1GB.
