Chaos,
My recommendation is to read, read, read and read some more. Only you can determine if this procedure and the lifestyle that follows is right for you. I can't give you any feedback about the surgery or anything since I haven't had it yet (my surgery date is 4 weeks from yesterday) but I can tell you that before I decided I armed myself with as much information as possible. I still have varying emotions about the upcoming changes in my life but those are to be expected with a change this significant. All I know is that I feel this is my best chance for success.
Good luck!