Hello,
I am setting my system up in WinUAE, having connected my real amiga HDD. My amiga is an A1200 with an ACA1232/40mzh (noMMU). I am planning on getting an indivision.
I do think performance may be lack of MMU, however I believe ACA have a kickrom function and if you extract your rom, modify with supplied utility, and kick that you can eliminate prepearemul.