lha binaries for osx ppc & i386 & linux x86 are now on aminet, so the scripts retrieves those from there unless lha is installed in /usr/bin/ or /bin/.
Amikit needs to be fully installed before you can go trough the BB1-2 install using this method, you can choose configure again at a later time without going trough the full install of course, and set this up. By that i mean, have your AmigaOS3.9 3.5 XL or whatever in the cdrom and launching the emulator going torugh the amikit installation from within uae.
And i think thats a wrap.