Seeking help with PC specs for running Akabak

First of all, I would suggest trying running this software in the virtual machine on your Mac.

I'm not really familiar with virtualization (or probably emulation in case of Apple Silicon) on MacOS host, but something like Oracle VirtualBox, VMware Fusion or Apple dedicated UTM and Parallels should work.

There are might be some compatibility issues, but I think it should be a good idea to try virtualized/emulated Win11 on your Mac first instead of spending additional money on hardware.