Once you have a Blizzard, use blizzkick (found on Aminet) to rekick a 3.1 ROM image to RAM (it's illegal if you don't have one for your own), and a CD-ROM OR CD-RW as a 2nd device on your IDE. /-/
If you have the SCSI kit, you can also use a SCSI CD-ROM instead the IDE one (much, much more faster). :idea:
For install the 3.9 WB: try if you will. It runs on a 1200 ks3.0 with 030/25, but will suck! Slow as hell.
If you like a better screen, funcionallity,etc; :-) try 3.5 and make some patches on then (try Aminet). :rtfm: