Here are some links that will help:

• Questions To Ask Questions To Ask At a Top Surgery Consult
  
• What To Expect At Your Top Surgery Consult
  
• Questions to Ask Your Plastic Surgeon
  

I'll add to this: ask about nipple placement. Look at photos to get an idea of what you'd like for placement and compare to the surgeon's result photos. Make sure you're on the same page about nipple size and placement.

Hope this helps!