I wouldn't use compression at all wherever possible. Those old drives are likely at least two orders of magnitude smaller than modern ones, so storing everythin

I wouldn't use compression at all wherever possible. Those old drives are likely at least two orders of magnitude smaller than modern ones, so storing everything uncompressed, or even the entire disk image shouldn't be problematic. Plain uncompressed files would also be easier to recover in the unlikely, but possible, event of failure of the media used to salvage them to.