Dermatofibrosarcoma Protuberans characteristically behaves more aggressively each time it recurs. One of the problems of having this lesion on your face is common to skin cancer in general. That is, the surgeon is more reluctant to take a wide margin.
Moh's has become increasingly utilized as a treatment for DFSP. Many Moh's Surgeons like to do what is called "slow Moh's". They combine the benefits of frozen sections ( slides are made from fresh tissue at the time of excision) and Moh's. This may be advised in your situation. After the tumor has been extirpated, it is generally advised to take an extra margin for additional safety.
My advice would be to find a Moh's Surgeon who has treated a number of DFSP cases using Moh's. . You might ask your Moh's surgeon whether he is one of these people. He will most likely give you an honest answer. DFSP is notoriously tricky the second time around as tumor can masquerade as scar tissue. He/she may not want to deal with it.
Alternatively, if you care less about your physician appearance, you might opt for a facial surgeon who has treated a number of DFSP cases. The main advantage of Moh's is that it is tissue sparing. If you care less about your subsequent appearance, you might seek a facial surgeon and forget the Moh's approach.
Good luck. You have a tough choice.