I'll toss in my two cents for what it's worth. I had the original takedown surgery and developed pouchitis shortly after that. I later had a diverting ileostomy and a second takedown and decided to do things differently. With the initial one I didn't use a probiotic and my first 'meals' were jello, fruit juice and broth. The second time around I opted to forego the sugary fruit and jello. I ate broth and thin yogurt and took a probiotic (couldn't afford VSL/Visbiome). I haven't experienced pouchitis since that take down in February 2018. I continue to take a probiotic and eat very little sugar. It seems to me that with the gut completed cleared out of everything after surgery, it was foolish to start off with a bunch of bacteria forming sugar. I wanted to give it a better chance of developing a crop of 'good bacteria'.
Good luck with your takedown. (It takes lots of time to settle)