I didn't know that one could get a microscope with an LCD rather than regular eyepieces. An interesting idea for those of us with aging eyes.
If you didn't look at the details,
the page with the Nikon photomicrography winners includes the magnification of every shot. If I recall, they go up to 100x, but I was surprised that the majority are between 5x and 20x.
I'll be eager to see what you come up with--particularly since I am going to have my own introduction to photomicrography in about 6 weeks (without equipment of my own for the time being).