Hey guys. I was planning on installing custom firmware on my Wii U by using the wiiu.guide. On the guide they recommend a 16GB or 32GB sd card to be able to install games. I was never planning on installing games on my sd card anyways. I was wondering how much memory I need to just install the basic custom firmware, an n64 emulator, and nintendon't. I only have a 4GB sd card readily available. If I want games, I would put it on my usb. I'm assuming I can run games through a usb like on a Wii for gamecube and maybe for n64 too but I'm not sure on that either. Thanks.