Others have addressed the size issues you had but one thing stuck out that I wanted to jump in on that gets frequently overlooked:
Darker nipples.With grafting, it's normal for the new skin that grows after the top layer sloughs off to be
much lighter than the original color. It doesn't happen to everyone, but it's pretty common so you're better of betting on it happening than it not happening if you have darker nipples.
For people who had pink nipples to begin with, this isn't a problem as their nipples stay pink (even if they're a slightly lighter shade), but for people who had tan or brown nipples prior to surgery, or for people who have darker skin, they may not find pink nipples aesthetically pleasing.
Not only that, but they may not be an even color; with lighter nipples this isn't very obvious, but for darker nipples it can give kind of a piebald effect to the way they look.
I had tan nipples before my surgery, and they're pretty multi-colored now.
Some parts are the original tan, some are a bright, pale pink.
For me, this isn't an issue, as I plan to tattoo over my entire chest next year, but for someone not planning tattoos it may be an aesthetic issue that they'll want to plan for the possibility of.
Pics of the 'piebald' coloring can be seen at the following links and are a few weeks old now, but the coloration hasn't changed.
Obvious warning for pics of nipples, so probably NSFW. These pics are of my chest that I took myself, and I'm cool with them being seen (I'm also WELL over 18)
:http://tinyurl.com/zdrzyhdhttp://tinyurl.com/gtv69gw <-- you can also see my tiny dog ear on that one.
http://tinyurl.com/jpakoubYou can always get 'patchy' colored areolas tattooed to have a color matching the color you want them to be, so it's not a huge deal and is easy to fix, it's just something to be aware of so it doesn't freak you out if it happens.