My advice for those who don't have the tree yet is to buy air layer plant from a fruited tree even though it is more expansive. Otherwise, you will wait for a long time. Also, air layer will be smaller plant.
Another point to keep in mind is the quality of the fruit of the mother tree. A few of my friends ended up chopping their trees because the fruits have too big of a seed compare to the flesh, and the fruits don't taste good.
The variety I have have good proportion of flesh to seed and taste good. Here is a picture of the size of the fruit. I could not find the picture that show the flesh.