Wait a minute! You are taking three different antibiotics and you have significant bleeding? Have you been tested for a C. difficile infection?
By the way, CRP is not an effective parameter for diagnosing IBD pouchitis. Plus, did you fail all of the biologics, or just one? I am not pushing them, but just pointing out that they need not be off the table, at least not for the reasons you mention. Pouchitis is different than fulmanant colitis.
Jan