Hmm I haven't done this myself (not having an 060!) but I think it should work.
1) Make copy of workbench floppy disk
2) install 060 libs/software on copy of workbench, delete some unnecessary stuff if you need to make space
3) Install Blizzard and hard disk in a2000
4) Boot off workbench floppy with 060 libs
5) Partition/prepare hard disk as required
6) Install workbench onto harddisk using unmodified workbench disks
7) install 060 libs/software onto harddisk
and that should be all fine and working!
