@mjmac

From your other posts, I see your taking Letrozole to shrink your tumor before surgery.

I happen to run across this article, which is the question you were asking back in Aug. It does not give a definite answer because every treatment plan is based on the individual, It does list things to consider, most have already been suggested by other members.
https://newsnetwork.mayoclinic.org/discussion/mayo-clinic-q-and-a-how-to-decide-which-breast-cancer-surgery-is-right-for-you/
What surgery did you decide on? Sorry if you already mention it and I missed it.