Lord help us all. Well, you can tank bleaty, so high resist monk is still probably the way to go in your case.
How about doom armors? And The Avatar as the boss. In addition to what you said, of course.
Also, couldn't you make your own monsters? Just change the name, percentages, abilities and sprites. You could even upload your own sprites. Or just copy and paste a monster and edit its values to make another monster without changing one...
We made an expansion and it is awesome. Really, you should check it out, especially if you're looking for some extra challenge.
Download over at ddmod.weebly.com!