Would it be possible to just add some detection for the AA1 into the current #! builds and just tweak the #! install so it all works out of the box?
I know my install of the full #! on my AA1 went pretty smooth. Just tweaked some config files, compiled madwifi, compiled acerhdf module and was good to go.
Also if you do install a custom kernel with support for acerhdf be aware that some AA1's with BIOS 3309 use a different command to turn off the fan. On those systems the fan will turn off, but after about 10 seconds or so the system just hard resets. It can be fixed by using the proper off command. But that command won't work on other AA1's with 3309. So it is a little sketchy.
Also I use to use the kuki (sickboy) kernel, but found myself building my own for things like truecrypt support, gamepad, and usb to serial adaptors. It is tough doing a cut down kernel and supporting most of the "common" stuff people need.
Looking forward to seeing what you come out with! Kudos for doing it.