Sounds great! What a unique opportunity to see inside Psygnosis!
If any of those disks have custom formats and/or copy protection that you will have trouble backing up, sure, we would love to help any way we can. (if this is the case, what type of Amiga do you have?)
But it sounds like most of them are hard drive backups and development files?
I guess it is probably easier to just copy the files over in this case...