Thanks for posting your query at DoctorSpring.com
I can understand your concern. I reviewed the picture.
The BCC is indeed quite small. Moh's micrographic surgery is usually reserved for large or complicated areas. Its also done in critical areas like the eyes, nose etc. Hence it can be done on the nose for you. This link is for your reference.
What your doctor is suggesting is also not a wrong option. But if you want to get moh's surgery done, it would be best to visit a surgeon who is experienced in doing it.
I would recommend that you let the treating doctor take an informed decision as to which treatment method to follow.
Please let me know if you have any queries.