Breast implants: Is 650 CC high profile, under the muscle too large and ridiculous? (photos)

Hi there! I've had 2 surgery consultations for breast augmentation, and both surgeons have suggested very large implants. I am transgender, so I have a somewhat wider frame than most girls, I'm 6'2, 150lbs, currently a 34 A cup. My surgeon wants to do 650cc, high profile, under the muscle. The digital approximation looks good to me (see photos), but other girls with slightly wider frames have told me that they did 450ccs and even that is pretty large.