The Accu-Scope EXC-360 Microscope is an excellent affordable option for your new Mohs practice.  You can get this microscope with a Trinocular head or an Ergonomic Binocular Head.  The microscope comes with a 2X, 4X, 10X, and 20X objective.  You can add a 40X objective as well to the 5 position nosepiece.

Accu-Scope EXC-360 Microscope | Mohs surgery microscope

Ergonomic Tilting or Trinocular viewing head, inclined 30°, rotatable 360°; fixed light path split 50:50
PL10x/22mm focusable eyepieces with eye cushions; accepts 24mm reticle
Plan Achromat 2x, 4x, 10x & 20x objectives with diffusing filter slider
Double layer, rackless mechanical stage with ceramic insert, low position right hand controls
N.A. 1.25 Abbe Condenser with iris diaphragm; slot for phase contrast or darkfield sliders
Coaxial coarse and fine focus controls
3 watt Variable LED with field iris
5v USB charging port for personal mobile device
Dust cover, power cord, immersion oil and instruction manual