My offer of help seems a bit redundant now, as you've already got farther than I did. I looked at the Mac instructions for AIAB and gave up.
It's amazing how nostalgic a boot up screen can make you feel. I still remember being amazed the first time I used the "Undo" button in Dpaint.
Straying off topic a bit, I agree that Mac OS X is probably the closest spiritual successor to the Amiga, but there is one big difference. In it's day, the Amiga was a top games machine, as well as being a PC. The Mac currently doesn't have the same gaming status.
I was thinking that it might be a good idea, and less daunting to new users, if "E-UAE on Mac OS X" had a more memorable name. Like Winuae. At least something more compact! X-UAE? iUAE? Maciga?