Edit..
You mention Mario 64 Land which I have tried on vWii with Wii64Rice. Game boots and plays pretty well. Got through 1st level with a little lag but more than playable.
I also tried injecting the rom for wii u menu and it does black screen. A lot of Mario 64 hacks do this due to the memory requiring expansion which can only be done on PC emulators. I've only seen success with Mario 64 Portal, Mario 64 3d World and Mario 64 Odyssey. All made by the same author but not injected by me.
These hacks use the original levels however and Mario 64 Land is a complete overhaul of levels, power ups, mechanics etc. I wouldn't hold out much hope for this one as an inject but as stated, on vWii and wii64Rice, it does play.