Bali games are all NTSC, they are US copy's of the game. To get them to work you'll have to start out by modding your wii, as it's new you'll have to get a dc2key (which i have and works brilliantly!) or wasabi chip.
The dc2key has multi region enabled so you would beable to play them, but make sure you do not update with an update on those discs cos they may brick or semi brick your wii. I would suggest using freeloader before playing which would remove any risks. If you have updated with the latest games like MKWII or ssbb then you should be ok, I havnt had any problems with my bali games.