Getting sized for breast implants is much more involved than it seems at first thought. It requires a full consultation with detailed questions to see exactly what your goals are, short and long term. It also requires precise measurements of your current breast dimensions, the dimensions of your chest wall, base diameter as well as preoperative photography, standard or 3D imaging. To see what the best options are for you, see two or more board-certified plastic surgeons in your area for a full and complete evaluation to make sure you are a good candidate and that it is safe for you to have surgery. I hope this helps.
This is a difficlut to say exactly but a very common question. In general, 250cc will take you up a size so 34 b\c then the extra 110cc will get you to a full c i would say. Difficult to say if it will look natural for your small frame.