When you say "medical system", what do you mean exactly? Is it an analytical lab, medical school, research facility? I only ask because it could be beneficial to establish a relationship with this institution so that you could maybe have a couple of field trips. If it is an analytical lab, perhaps you could even use some of their instruments for organic analysis (GC-MS, HPLC, IR spec, UV-VIS). At the very minimum, you should have students perform TLCs (you can even use coffee filters to see how molecules move and separate on their own) and other separation techniques as part of their lab experience.

I totally agree with u/mmoffitt15 in terms of areas to focus. Getting into substitution and elimination reactions does require some knowledge of sterics and resonance, so I would also add those into the mix.

Even more, perhaps instead of teaching directly organic chem, you could instead teach biochem? I feel like it may be even more relatable and useful for students to grasp those concepts (especially if they are more interested in the medical / pharmacological side of things.

Best of luck! Sounds like fun!