My brother has Crohn's. He has been dealing with it for about 10+ years. He did end up with surgery (about 5-6 years ago) and does not need medication now. However, he still needs to watch what he eats because his Dr told him that eventually those certain foods are still not good for him and depending on the food he does have flare ups. Although, he did get a good chunk of his intestines removed, so its still questionable on how much more can be removed. Once in a great while he will have a flare up, but for the most part is doing good. It might be Remicaid that his Dr suggest a couple years ago when he ended up in the hospital for a flare up, if its the one that has a high risk to cancer, but my brother does not want to take it do to that fact. (But I could be wrong about the name of the drug???)
I think you should really way your options on how you feel vs. the type of things your Dr is telling you, you need. And definitely research it, like you are.