You don`t mention more about your gyno, is it only hard tissue around the breast gland?
Usually there needs to be done some liposuction also because some fat is build around the nipples.
If you have gyno fat around there no matter how lean you get it probably won`t go away.
I`m thinking it would still leave a small crater there,i mean after all the breast glands were there once and now their gone right?
Smaller the gyno the better the result is going to be,getting rid of breast glands is in my mind the best choice even if there
s going to be a small depression that is probably not even noticeable for someone who doesnt know you`ve had a surgery there.