I had my surgery on 1/09/2013 and was experiencing the same thoughts. That was 10 medications and 130 pounds ago. The surgery went fine and all I had to do was sleep through the surgery. Now I have the energy to chase my grand daughters around and actually catch them. Run up stairs instead of gasping for air at the top of them. Blood pressure fine, cholesterol fine. I am sure you are doing this for all the right reasons. Just remember you are not the first one down this road. I will be waiting to read your update out here in a few days.