J.J.
Dr. Benesh is NOT an Oral Surgeon - he is a periodontist. You WANT to have an oral surgeon remove wisdom teeth, especially if they are impacted! Oral Surgeons have an extra two years of training in procedures like this and I wouldn't settle for anything less than the CORRECT specialist.
Would you go to the dermatologist for infertility issues? Of course not! So don't let a periodontist do the work of an Oral Surgeon.
Be careful with 6 Day Dental. They pressure you really hard and talk you into things before you really have a chance to think about it.
I would cancel the appointment, and be prepared for them to give you a hard time about it. But do what is best for your son and take him to the CORRECT specialist. Message me if you want a few recommendations.