I had my j-pouch removed and was told then that surgery would be worse than my colonectomy was. She couldn't do it laproscopically either and she spent 5 hours on my adhesions during the 8.5 hour surgery.
I bet your surgery is open for similar reasons. I didn't find it worse as I was mentally prepared for it. We have already had recoveries from similar surgeries. Therefore I bet your recovery will go better than from some of your other surgeries.