It will produce at, say, 3 years of age. But full / heavier production may not come until it's been in ground for 6+ years. So, it's not uncommon to get a dozen fruits from a tree that's 5 years old (it will set a lot more than that, but will abort many when small).
The CC fruit is a little mild for my taste, but it's good. The tree itself is extremely easy to maintain. They grow somewhat quickly when young but stabilize at around 15 feet tall and wide once mature with a very light pruning. Of the roughly 3 dozen mango trees I have planted out, I'd say it's the easiest to maintain of the group, due mostly to the tendency to "flop" over vs growing vertically. Key is developing a good structural framework when younger if you want to be able to walk under it.
I have two trees, both from the original batch that was released in spring of 2011 if memory holds.