30 YO: BF 2 babies 300cc silicone unders

I am a young, energetic mother of two breastfed babies who has never been big bosomed by any means. Before having my children I was a 33A/B depending on where I bought my bra from which was totally acceptable to me. I could always buy a padded bra with a little push up effect and attain some cleavage and be totally happy with the allusion of curves. While I was nursing my children I was a full C or nearly D cup, depending on how engorged with milk I was =O That was fun!!!. After nursing them (my son is now 3yrs old and my daughter will be 1 in November) I am a 33AAAAA. (insert tears) I can't wear dresses or bathing suits without stuffing it so that it fits me right and I feel...for lack of a better word, unfeminine. I don't feel like myself and am uncomfortable in my own skin. I know that I don't "need" large breasts to feel feminine, but I need something. As women we are supposed to inherently have these.....and I don't, not even a handful. I don't feel sexy or womanly at all and I am ready to make a change. I am doing this for me and for me only. I just want to feel confident in my own skin and simply be able to wear a swim suit or a nice dress with our feeling like a little boy wearing women's clothing. I want my womanly figure back and thats that. I'm looking for a very natural look. I currently stuff my bra anytime I go out of the house, especially when I am working. My hopes are that after I have my BA and no longer am stuffing my bra no one will even notice the change in me and it will be like they were mine all along. =)
These are my stats so that other ladies out there who might be similar to me or want similar outcomes can have something to compare it to.
I am 5'8", 125lbs, thin and athletic (these before pics make me look really skinny but because I've lost so much fat and breast tissue volume it makes me look scary...=( I'm also ready to lose that look.)
My BWD is 12cm and my PS and I came to an agreement on 300cc Mentor Moderate plus profile unders, silicone gel implants. (I was originally going with 250cc but he wasn't comfortable going any smaller than 325cc, I said I would do 275cc and he was still not comfortable with that size but agreed. He said my breast pocket was too big for an small implant like that and it would move around. He had me thinking a lot about what he said in terms of the "right fit" so I went back a few times and played around with sizers and actual implants and landed on the 300's. He seemed much more comfortable with that selection and assured me that I would be happy with the result and that it would fit my body and be perfect for my BWD. I am a type A personality and have trouble letting go and allowing other ppl to be in control but I understand that he IS the professional in this dep and I just need to trust his judgement. I told him I didn't want to look fake and I wanted a natural look and showed him some wish pics and he assured me we were on the same page.) Man, I wish there was an exact since to this!
These are some before pics and then I'll upload some rice size pics and wish pics soon.

I was back and forth with the rice sizer test for a while. I finally landed on/a little over 300cc's worth. I have been wearing them in my nursing bra's for a while now. I'm hoping that after my surgery no one will be able to tell the difference and it will look like that I've had all along....except now when they bump into me it won't feel like i have rocks in my bra =P

Here are some of my wish pics. They're a little on the bigger side of where I want to be but I definitely don't want the look of two tennis balls under my chest. =[ I'm okay with being a little smaller than these pics but definitely not any bigger =O