I’m one who has had to stay on antibiotics, and if you find several that work you can rotate them every 2-3 weeks to keep them effective. Even my Cipro+Flagyl has worked for years without rotation. I don’t know it that’s going to be your story, but there are a couple of things you can do to keep pouchitis away, and one or more of them might do the trick:
1) VSL #3 DS is a prescription-strength probiotic that helps prevent or delay pouchitis. I take 4 packets per day, which is a high dose, and I'm convinced that it helps. It's expensive if your insurance won't cover it, though.
2) A very-low carbohydrate diet helps some people significantly. It's at least worth a try. Remember that all starches and sugars are carbohydrates, even if they come from natural sources, like fruit.
3) Optimize your use of soluble fiber and Imodium or Lomotil. This doesn't change the pouchitis, but it can keep everything else working as well as possible.
Good luck!