I had breast reduction. I'm 5'2 and was a E or G and was brought down to a large C. You will not regret it. The scars bothered me at first but after sometime they won't bother you.
My spine was curving too. The worst part about the after surgery is drains. Mine were...well...it was disgusting.
My wake up call was when I started getting unnecessary attention from men and my shirts were very unflattering.
My best advice before surgery is bring a stuffed animal. When you get to the waiting room hug it as much as you can. That was what I did. Bring something calming to have with you.
Good luck. If you need someone to talk to I'm here 
_________________
“There’s a lesson that we learn
In the pages that we burn
It’s written in the ashes of the fire below”
-Down, The Birthday Massacre