Are you being seen at Mayo or a major university teaching hospital? If so, I would go with your doctors' advice. You could ask if you have time to get a second opinion, in any case. But given consensus by all your docs, I don't think you may need that.
If you had breast cancer surgery previously, I think you have a good handle on surgery (and that probably wasn't done laparoscopically). Is this outpatient surgery? or overnight stay?
One of my cysts was so large it was probably pressing on my bladder.
Given a breast cancer history (have you had genetic testing done?), I think I would have the surgery. If you don't, and the cyst(s) increase in size, maybe you couldn't have laparoscopic surgery at that point. Or if it turned out to turn malignant, you could need additional therapy then.
If it is malignant now (which seems unlikely, given the consensus of your doctors), then you would want to treat asap.
Your having had chemo and radiation in the past, I think this surgery is less of a burden than what you've had to experience for a different problem.
My cousin who's a medical oncologist says surgery often "cures" malignancies, more than other therapies.
I'd say go for it, but that isn't medical advice.
Does the radiologist agree with the surgeons?
If you can put this in the rear view mirror two weeks after the surgery, that would be great. So try to factor that peace of mind in to your decision, as opposed to future scans and worry.
Hope that helps.