I had 410 and this took me from a 32a/b to a 32e/f, so I would say expect to be roughly an F. BUT everyone is different, girls with the sames stats as me had 410 and some ended up a D and some and F, eveyrone heals differently. I would say, if you’re worried about going too big, maybe go down to a 410, I didnt want to be too big either. You can always get it done again (I know it’s a lot of money etc), but once you’ve gone big your skin has stretched and won’t be the same… or so I was told. Boob greed does get a lot of the girls on here, but they are usally the ones who wanted to be big. Have you tried the rice trick, to get an idea of size? x