It's scary, but most pups will be just fine and you'll be happy in the end. Your friend had good results, nothing in the world is for sure, but chances are it will all be ok.
I've ahd Hazelnut sapyed, she was about 4 pounds at the time, no problems, couldn't even tell the next day. I've had another smaller Yorki, LOng time ago, she went through the surgery also with no ill effects. Will all say a prayer for you.