You're not rushing into this at all. You've been on prednisone for a year and a half, and realize that UC is not going to go away on its own. Surgery is a cure, and you're doing the right thing.
I've been disease-free and med-free since my surgery two years ago. It's so wonderful to have good health after being sick with Crohn's for 7 years. I haven't regretted this surgery for one minute.
I'm thinking of you and praying for you.
Dx'd Crohn's in '99 at 28. Proctocolectomy and ileostomy in '06.
Disease-free, medicine-free, and very thankful to be healthy again :)