I would get the first surgery in as soon as possible. You'll be fine for your vacation. I had three steps and after the first step - which is the major one - I went away for a weekend trip a couple of weeks later. After four weeks you'll be feeling good and by six weeks you'll be feeling great. Good luck!
First step of j-pouch - April 1, 2010
Second Step - 9/21/10
Third Step - 12/14/10