You have 2 real & 2 Maybe options

1. As you suggested run a Mac Emu & use
Final Cut Pro, This is a very professional solution.
2. Run Linux based editing software
LINK:
http://www.nmt.edu/~kscott/video/3. Run MostionStudio "IF" an A1 version is released.
LINK:
http://www.titan-computer.com/motionstudio/index.html4. "IF" Ami.Inc allow MorphOS on your A1.
Then run MotionStudio Morph Version on it.
You can pickup cheap Mac systems but it's not an A1.
The OS flexibility will be the killer feature of the A1.
We just need to run Morph on it legally.
Same applies to OS4 on the Pegosis.
For those that want too, it's about choice.
I run Win98, NT4, W2K, Linux, BeOs & Qnx.
On my PC Mobo just need a legal Amithon.