Hello and thank you for your question! I want to start off by telling you what I tell many of my patients: Do not focus on cc's or bra sizes as many women see their friend with "x" number of cc implants etc and think that they have an idea of what they want. There is a lot that goes into implant selection -- your breast volume, the amount of cleavage you want to achieve, your base width, your rib shape/projection, etc. Also, when it comes to bra sizes, most women are not accurately sized for their bras. Please keep in mind that a breast implant is a round object and has a certain diameter. Your base width on each side of your chest will determine "how big of a ball" or what diameter implant you can reliably go up to with a socially acceptable cosmetic outcome. The implant will "augment" or increase the size of your breasts to an amount acceptable to you and your surgeon. There is no correlation between height and weight and base width; therefore you need an in person examination to be accurately measured.
The most important thing to consider is really the size and look that is appealing to YOU with the implants you choose. Many surgeons have sizing models whether using bras with implants or computer simulation. I encourage you to discuss with your surgeon many of these considerations when deciding which implant and size to use during your surgery. My patients will try on a sports bra and then we pick the implants based on their measured breast base width. For example, if your base width were to support for example up to a 650cc implant, I would have you try on the 650cc implants in the bra and then the 600cc or 550cc implants and afterwards select the implant that made YOU the happiest. In reality, don't stress too much as this is not a HUGE difference and should be the fun part of the process. Go with what is acceptable based on your measurements and makes you happiest, and make sure to weigh the pros and cons of the options you are considering. You can also compare the different profiles such as high profile implants with extra high profile implants and see which look you like most. The profile of the implant will determine how much upper pole fullness and overall projection you portray. If you were my patient, I would have you try on implants of both styles and see what shape and size made you the happiest.
Make sure to seek consultation with a board certified plastic surgeon with expertise in aesthetic breast surgery. If you are uncertain about the advice given to you by the surgeon whom you met with recently, I recommend you seek second opinions with further consultations to help you in making a final decision. I hope this helps answer your questions and I wish the best of luck to you!
Dr. Sean Kelishadi