Probably would have been much more useful 5 years ago, better late than never I say. Some people no doubt may still find this extremely useful. :D Enjoy!
YouTube - ‪SD GAME LOADING ON GAMECUBE!!!!!!!‬‏
gc-forever - Gamecube/Wii Forums - View topic - Wii DVD + Wiikey Fusion (SD Loading) to GCN mod
gc-forever - Gamecube/Wii Forums - View topic - Building a portable GC: Need options other than DVD
Big thanks to emu_kidid, zenloc and the rest of the GC-Forever.com community for helping me get this working!