I don't think a larger hard drive is really required, the second partition is only 12% used. But I do have to ask "why did you give yourself such a puny boot part?" You're bound to run into avoidable difficulties that way. :lol:
I'd temporarily attach another device and copy everything to there (it only needs 130MB of space) and then repartition that SCSI drive in a more sensible fashion - say 100MB for Workbench and the rest for whatever (or even the whole drive as just one part, my favourite way). It'll probably be faster and easier than ftp-ing around.