FS-UAE seems to be the perfect solution for a new AmiKit Mac Edition.
You can just use the executable together with a config file.
AmiKit is now running as A4000/040 in fullscreen mode.
Also it is not necessary to use "less accuracy".
My FS-UAE configfile:
amiga_model = A4000/040
bsdsocket_library = 1
chip_memory = 2048
hard_drive_0 = //Amikit/Hardfiles/AmiKit.hdf
kickstart_file = amiga-os-310.rom
uae_cachesize = 8192
uaegfx_card = 1
zorro_iii_memory = 131072
fullscreen = 1