I have no idea, I am struggling over the sizes of the smaller implants, I am not sure the extra 20cc wouold make a huge difference, my pc told me an extra 40cc would just give me a little more projection (I think they say ~150cc per cup size but don’t know if that’s true as some people have same cc’s and end up different sizes and I think it depends on your frame to begin with).
There’s a page on here somewhere with before and after stats which might be useful as there’s lots of posts on there – you might find someone who’s had similar. What size are you hoping for??