@dummkauf-I made a Kiwit several years back when there was a recipe for it in BYO. I wish I'd have used a bucket! It took a LOT of shaking to get all of the kiwi out of the carboy. Also, it would be a good idea to line the bucket w/ a 5 gallon paint bag to make it easier to get all the kiwi out.
I was happy with my kiwit, hope yours turns out good too.