I had fistulas and setons, too, and understand how painful they are, so I'm happy to report that they disappeared when I had my proctocolectomy two years ago.
Yeah, having a permanent ileostomy isn't a dream come true for me either, but it's a heck of a lot better than living with the wrath of Crohn's. This surgery has been the closest thing to a cure for me, because I'm currently disease-free and medicine-free.
Since you're young, your body will recover quickly, and you're going to feel so healthy and energized after getting that diseased colon out of you. I knew the Crohn's was gone the day after my surgery, and it was the best feeling in the world.
I wish only good days ahead for you. Watch out, Vegas, here you come!!
Dx'd Crohn's in '99 at 28. Proctocolectomy and ileostomy in '06.
Disease-free, medicine-free, and very thankful to be healthy again :)