You're complaining about two small nicks when you plan on placing some stickers on the back.
Just use the damn thing.
Stickers or not, at these prices, I wouldn't accept a "new" laptop with any nicks on it just to be able to say I had the latest and greatest. I say return it, wait a while, and if it's not a BTO pick one up in the Apple store where you can inspect it before you buy it.