If you have mild UC maybe you should try some meds before going the surgery route. This would allow you time to research more. (BUT not prednisone, remicade or others with bad side effects.)
I wish I'd had the surgery years ago, just had it 7 weeks ago, have a temporary iliosyomy and am having surgery next week to connect all to the J-Pouch they fashioned out of my small intestines ao I will still be able to pass stools through the rectum. So with surgery you don't necessarily have a permanent "bag".