Athletic mom of two wanting natural boobs, mentor 230cc sub-muscular

Hey! I can't believe that I'm here and really doing this, and also documenting my journey to all of you! But RealSelf has been so fundamental in my research of breast augmentation I feel it's my responsibility to share my experience and help others too.
My story is the typical one. I never really had boobs to begin with, and what little I had, vanished completely after breastfeeding two kids and exercising a lot. At the moment, there is no push up bra in the world that would give me cleavage since there is just nothing to lift, haha. I've been thinking about breast augmentation for years, never being completely serious about it though. It's kind of been a last resort, a thought that I've comforted myself with when I've felt super unhappy about my breasts. I hate it how at the gym my chest is just completely flat, and how impossible it is to find even a remotely fitting bra. I'm super self conscious in swimwear. I'm just done with it and feel like it's now or never.
My biggest concern is my kids and the fact that I can't pick them up for so long. My six-year old doesn't really need to be carried around anymore, but the 3 year old is a different story. Also, I work out a lot and having to skip upper body workouts for at least 6 weeks and not to be able to do my HIIT routine is giving me great anxiety. It's such fundamental part of my everyday life and a way to boost my spirits and handle my stress levels... it's going to be tough. But, I've decided it's going to be worth it - a little hiatus and I'll have boobs for the rest of my life. Hurray! I'm ready to do this!!

I had my consultation with Dr Marc Mani and immediately felt I could trust him and that he understood what my goal was. I want something natural, proportional. I'm quite petite, and the last thing I want from the augmentation is to be top heavy and have unnatural looking breasts that don't fit my frame. Dr Mani estimated that the biggest implant that would fit would be Mentor 250cc. He prefers textured ones, which concerns me a bit - will they be stiffer and more visible since I have very little breast tissue? He also suggested aeoral incision since I don't really have a crease, and under the muscle. The aeoral incision makes me a bit nervous and was a bit disappointing, but I understand the doctor's point and don't want to have a scar that is visible at all times. It just sounds so scary! I'm also scared of losing sensation in my nipples.
Surgery is now scheduled for January 19th!! About 5 weeks to go! I'm yet to decide on the final size, hoping I can come out of the pre op appointment feeling confident about my choice. The 250cc rice sizers I made felt huge initially. Maybe 230cc or so would be better? Gosh, it's so hard to pick the right one!! I'd rather go a bit too small than too large. My goal is that when clothed, no one will notice a difference. Anyone out there with smaller range implants?! I'd love to hear your thoughts!

I've been browsing so many pictures and my phone is filled with pictures of boobs! If anyone unaware of this project would see them they'd think I'm such a weirdo haha. Many of these pics are from RS and some are pics of the users. If you spot yourself take it as a great compliment!!
Also forgot to share my stats earlier, I'm 5'3" and 115lbs.