Hi Maysa - Welcome! You are in the right place. While Mayo's primary HCM program is in Rochester, there are some very capable HCM doctors in Scottsdale, AZ as well. You are lucky that your local doctor is so supportive of your seeking treatment at a specialty center, and you are in really good standing for the future with that set up.

A couple of suggestions: You may want to read this blog article from Dr. Steve Ommen of Rochester's HCM Clinic about treatment at a specialty center, and how important it is. Dr. Ommen is the director of the Rochester HCM Center.
https://hcmbeat.com/2016/11/20/guest-blogger-the-view-from-a-hcm-center-by-dr-steve-ommen-of-mayo-clinics-hcm-clinic/
Here is a link to a video of Dr. Ommen and one of the surgeons who does myectomy, Dr. Schaff, speaking about myectomy. This is a very good overview.
https://connect.mayoclinic.org/discussion/hypertrophic-cardiomyopathy-and-the-surgical-treatment-apical-myectomy/
Dr. Steve Lester is the head of the HCM practice in Arizona. Here is a video of him speaking about HCM:

And here is a link to the numbers to call to schedule an appointment in either place:
http://mayocl.in/1mtmR63
Wishing you the best as you and your family travel this journey. Feel free to ask any questions you have and we will try to answer.