Hi Elizabeth. My stats are similar to yours, 5’4 and 8 and half stone. I was completely flat and barely an A. I had my surgery one week ago today! I had 375cc in my right and 330 in my left (had one breast bigger than the other) teardrop under the muscle. I love them and they look so natural already, I am looking forward to seeing them at 6 weeks once fully healed! I had Mr Giannas and would 100% recommend him he is so lovely, helpful and his scars are really neat. It really depends what size you are looking to go to but I would recommend going bigger as they look smaller once they’re in and especially if under the muscle. Also, it is dependent on what your surgeon says at the next consultation, I had a few sizes ordered for me as he wasn’t sure how much he would be able to fit in with me having very small breasts before, luckily he got the biggest ones in which I’m so glad of!