@mousehouse
You should start making the most basic part (040+128MB ram) working. Then people will start to believe you.
Does the PPC part have access to Amiga memory? I mean chipram, amiga custom chips... if that's the case you could disable 040 and use a JIT as it will be much faster.
AROS-PPC may be a good OS for your PPC part.
Jason McMullan has said that if somebody gives him a Mac Mini he would be willing to add MorphOS compatibility to AROS-PPC.
IIRC WarpOS/PowerUp require to share some memory so you may need to emulate 040 to make them work.