My cousin flew down here to Florida to have the reversal done by the inventors of the procedure. He had his colostomy when he was a teenager. He had the reversal done when he was in his forties.
It didn't work but not because of the long time. There were other complications. He had to have the reversal reversed.
I'd get a second opinion from a different rear admiral who does the procedure. Then say Aye, Aye, and listen to their advice.
I understand the desire to go back to "normal." I can't remember what that was like. I do know that this is so much better than the last 6 months prior to the colostomy. I personally can't go back, but I don't think I'd want to if I could.