I have been thinking about this today, ten saw this thread tonight!
OP of course it is your decision, but undoubtedly this is a feminist issue. Breasts are one of the things that define our sense of femininity, so if we are planning to make changes to them then this is something that will interest/concern feminists.
The thoughts I'd been having before I saw this thread were simply how sad it is that this has become such a normal thing to do that we seem to have forgotten how extreme it really is.
I have always had small breasts (A-B cup), as a teenager I swore I would have implants when I got older. Until one day I thought about myself as an old lady, thinking how sad and silly it would be that I had never worn a boob tube, or even a strapless top, because I was so self-conscious about my body. And also of how beautiful my young body would seem to my older self when I was reminiscing.
Tabouleh has already posted the link I was going to, but since noone has commented on it, I will post it again here
I had 2 children 15 months apart in my early 20s, both unplanned. I was devastated by the body I was left with. Discovering this website helped me a lot, to accept that I was just fine the way I was, more than fine in fact.
Please look at the website if you haven't already. Whatever decision you make, I think it's really important to accept the changes to our body, through pregnancy, and through age. Even if you have this surgery, there will come a point where your body changes. If you keep the 'perfect' youthful perky breasts, what about the rest of your body around them?