IMHO, probiotics suck as a treatment for the vast majority of the pouchitis afflicted population. If you can tolerate your symptoms and want to try them great, but if not I would go with amoxicillin or better yet xifaxin, which stays in the gut and isn't systemically absorbed, and have an unsedated scope. Unsedated scopes are tolerable, I only get sedation because I can and because I prefer not dealing with the feeling of being a helium balloon that gets blown up and then flies away.
In addition the cost efficiency of Xifaxin vs. probiotics is much higher. If you are going to spend significant sums on treatment, Xifaxin is the better value higher cost treatment in terms of bang for the buck.