Your offline machine only needs Armory.
Or do you just load Armory form the zipped files? Do the library files need to be unzipped and installed or will this occur automatically?
Depends what OS your offline signer runs. If it's Windows or OSX, you only need the respective release package. For Linux, you will need to install the dependencies as well. The 0.93 offline packages have that stuff in there, so you could look at these.