If you're already dual (duel is something you can do with swords) booting Windows 8 and Niresh then what are you worried about?
It's true that Chameleon does not support UEFI. I am not familiar with Niresh but I should be surprised if it doesn't let you install the Clover boot loader, which does support UEFI systems.
We can't support Clover or Niresh here.