{Quick Question} - HOW 2 PLAY BO2 FROM MULTIMAN SAFELY?

This probably has been asked Before. but my circumstances are different 2 those others.

I have bought the Game Disk. But i wish to improving loading times and the ability 2 play from My CFW + OFW PS3's.

as long my copy does not "HIT" the internet. can i just copy my copy of BO2 with Multiman and use BD Mirror with GameDisk Function?

i have done some reading. People say use Standard Emulation instead Hermis and use internal function. why is that?

i always use BD Mirror with GameDisk and Hermis Emulation. - as long i don't mod the game game. can i just play of a back up? and use the BO2 Disk with my OFW PS3?
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o and one other thing some one also said to use a MW3 disk to spoof the game or something when using Emulation.