20yrs old. 5'5 165lbs. 36a/b (on period and bc right now so they are extra full in these pics)looking for most natural looking, feeling, and proportionate to my body. Not wanting bigger than 36D. Chest straight across under breast is about 15-16 inches. 500cc low pro mentor silicone cover breasts but no projection. 500cc mod pro has nice projection but doesn't fit chest nicley. Ps recommended 600cc mod pro with crescent lift. I've heard 600cc is a lot. Is it too much? How big would I be?