Hi Ritas, I think that I only have about that much colon left, and I just had a reversal. I know that from reading older posts to this forum, some folks have much less than that and have had reversals, so it is not impossible.
When you say that you have a high output, I am not sure what that means. When I had my ileostomy, I was having to empty my bag every two hours or so throughout the day and night . . . the biggest downside to the ostomy for me. I am now still healing and getting my bowels regulated, but I am able to go 4-5 hours at night without a BM!! This is total heaven for me!!