You're close enough to Brigham and Womens or Mass General to talk to someone there, if you're not already doing so. Both are well-respected facilities, with excellent surgeons.
My unrequested two cents' worth: Your tempo is that you feel you are in an increasingly desperate race against time. You see the handwriting, and you are shocked that the doctors can't read it. Remember that your numbers are moving up, but are not at panic level, and there is some time yet.
Stress is your enemy right now. It will make your symptoms seem worse than they are, and you don't need that distraction right now.
You need to find your way to some sort of peace with yourself for right now, while the very appropriate plans you have made for a second opinion go forward. Stress feeds into itself, and fear feeds stress. Everyone here has felt that fear of realization, those leaps to panic, so we know what it's like. Distract yourself until things are moving again. All the players sit on the bench between quarters.
When you speak to this doctor, I would bring up your family history, and as much information about the causes as you may have. While your numbers are only borderline for surgery (could be 4.9, but could also be 4.6), the family history might add weight to the decision toward surgery. However, you should not be surprised if the initial recommendation is for still more tests.
If this surgeon also says it's too soon, ask his reasons. They might be valid, and you might surprise yourself and agree. Also, if you push too hard, the surgeon might back off and try to deal with your urgency, rather than with your symptoms.
Enjoy what you have now, while you look forward to what you will have.
Best wishes,
