Does it involve soldering? I think you'd be mad to when you can and a cd32FWSI for £49.50
http://cgi.ebay.co.uk/Floppy-Drive-Amiga-CD32-Games-Console-/170572894620
49.50 pounds is a fair price, but I could not find any info about their floppy drive for CD32 on Analogic's website. In fact, I could not find any information about any of their Amiga products, even though they have an Amiga/Atari section, it is blank.
I wonder what format(s) their CD32 Floppy Drive can read/write, 720kb, 880kb, 1.44mb, 1.76mb? And more info on the parallel port would be nice to know too.