First of all, I think you made a very wise decision in using Dr. Jacobs. You can go into the surgery feeling confident, and that's worth a lot by itself.
As far as the scar.....it makes me think of this.....
When my son was young, a lot of us went boating out on a lake. One of the things we did was tow a big raft (that was made for such things) behind the boat. The raft had handles on the front of it that you could hold on to as you road on your stomach. A big metal hook was attached to the front of the raft in order to pull it.
Well...I'll never know how it happened, but somehow, the metal hook got lodged in my son's armpit and when the boat took off. It ripped all the way down his arm to about the elbow. Somehow, my brother in law (who was driving the boat) knew something was wrong and he put the boat into reverse as soon as he could. I believe God was there and that was the reason he had the forethought to put the boat into reverse. But as a result of him doing that, it likely saved my son's arm.
We took my son to the hospital and we were all sick and scared. He was only a little boy at the time. After the surgery, the surgeon came out and said he (and his arm) were going to be fine. She said, miraculously, the hook didn't affect the main artery to the arm at all. It came within an inch or so of the main arterty, but other than that, all they really had to do was clean up and suture a very large tear in his skin (from just under the armpit to the elbow).
Needless to say, my son was very lucky. Considering how bad it could have been, we all felt very blessed. It was a miracle.
Does he have a scar from his armpit to his elbow? Sure he does! But it's not that bad....it's just a scar. Growing up, he had a great time telling all his friends how he got it and they actually thought it was kinda cool that he had it. I'll never understand the way kids think; I guess they thought it made him look tough, I don't know.
So, basically, our reaction to his scar 20 years later is....so what? Actually, it's not even that.....we don't even THINK about it anymore. It's just something that happened and that's the way life is. You deal with it and move on. We don't even think about it anymore, and the main reason why is because he still has his arm, and it functions perfectly. He has no disability and he's completely healthy. And that's all that matters. He may as well have skinned his knee.
All this is to say that I think you'll be the same way after your surgery. Sure, you may have a scar, but so what? You're going into the surgery already knowing about the scar so it's not going to be shocking or surprising. You'll be prepared for it and that helps immensely. Think of the alternative if you hadn't had the surgery. Compared to having big noticeable breasts, a scar is NOTHING! And besides all that, like all scars, it will fade over time. I think you'll look back at these days and shrug your shoulders and think "So what?" about your scar. It'll just be you! It'll just be a problem you had corrected and you'll accept it...because that's just the way life is. Time has a funny way of helping how we see things.
In the meantime, as a result of your wise decision, you'll be able to enjoy life the way you were meant to enjoy it. If someone asks about your scar, tell them whatever you want. You can tell them the truth or make something up; I really don't think it will matter to you anymore. Tell them a lion attacked you! Who cares? It really won't matter because your boobs aren't going to be there! And what's THAT worth? Priceless!