Mixed feelings about implant size. 475cc or 495cc. BWD: 13cm wide, 4"11, 150 pounds. (Photo)

It sounds like you are on the right track you have selected a board certified plastic surgeon and are doing some good research on implant size and shape.  According to your goal photos and your preop photo the implant selected seems reasonable.  If you still have questions I recommend you talk with your PS again before surgery, and consider getting a second opinion if everything is not clear.Best of luck,  

Thank you for your question and photographs.  Based on your goal photographs, I would recommend the larger of the two sizes, though 20cc's is not a lot of volume difference (less than an ounce), it looks like you would prefer to be on the larger side.