Although it's probably not its primary purpose (and you might not even know it), your image is perfectly suited to run MiNT on the MiST!
I have copied over everything from your download image to a HDDRIVER formatted one, renamed MiNT's MFP driver (as it seems to be incompatible with the MiST) and have a very neat MultiTOS setup for the MiST!
I have been unable to get this to work. I can format an SD card and get it partitioned in the MiST w/out difficulty, and use Hatari to copy files to that card. My problem is that the resulting card bombs in the MiST.
Could you post more details about your process?