I haven't seen or heard of Chongo's will, but if he has one at all (which I sort of doubt), I think he's probably had it updated recently to leave everything to his friend, Renata Carson. Just an educated guess on my part. She's a lot younger than Chongo, so it would make sense from his point of view to do that.

Chongo usually thinks in terms of other people dying, not him, and that's why his guns are always kept loaded...safety on, of course.