I've never done it, and I'm not sure if you can just use a separate profile. I know the other two ways work, but I've never personally had over 292 games at one time. I don't know if it nags you or what. that would be annoying if it does. the 3ds doesn't from what I remember as I've had many games on there.
yes, hack your virtual wii if you want to try with just sd card.
yes, hack your virtual wii if you want to try with just sd card.