@castelon The quick answers are yes, yes and no.
Ideally you will have the answer file on the windows golden image before you run the sysprep command because when calling sysprep you will point to the exact location of the answer file. Then shut down and capture with FOG.
While I was developing my golden image I wrote a post download script to open the windows disk and replace the answer file. I did it this way to avoid having to restore, update teh answer file then sysprep and recapture with fog.
While yes you can deploy it with a snapin, it won’t do you any good because winsetup needs that answer file BEFORE snapins would run. Its a chicken and egg situation.