Information I have learned in the past two months about Moringa oleifera:
It grows very fast and requires constant attention.
While it is a very useful tree, this is not exactly a decorative tree.
Every part of the tree right down to the roots can either be eaten or used in some other way, but if all you do is let it grow it will become a monster. Better keep those lopping shears sharpened.
The wood is very brittle which can become a problem during high wind events.