First, it is very difficult to predict cup size from volume removal, second there are no photos to get an idea of what size the breast are now. Everyone "wears" breasts a bit differently. 628 gms is a little more than a pound of tissue.
Coverage will depend on your insurance's criteria. Most require a minimum of 500 grams to be removed from each breast. For most women that would be DD or larger. If it is less than that, they may not cover it. However if you are DDD or larger you should have no problem. But you should discuss...
During a consultation in my office, you will first meet with me discussing yoru concerns and obtaining a medical history. Then a physical exam will be performed with a chaperone present. It is a pretty relaxed and comfortable atmosphere.