You are asking a question that really has no answer. If new to the J, start no wind and little crosswind angles, and get a feel for the airplane, how it handles in different configuration, weight and speeds. Find your self a Mooney instructor (or even a Mooney safety pilot) and test out increasing crosswinds. It is as much, if not more about your knowledge and ability to instinctively handle your airplane, in various conditions, than it is about the amount of cross-wind component. Much different if gusty v. steady crosswind.
I like crab to about 500 ft, then a stabilized approach hand flying with rudder correction until the flare so I know what the winds are like and how much of what correction I need. I do not like the crab n' kick method.
I have been known to land with speed brakes (if you have them) so to be able to carry more power if needed.
There are several ways to practice and several strategies. Learn what is instinctive for you, but more importantly learn how your airplane responds. Practice slow flight, at altitude in various configurations. Mooney's handle well in ground effect, which is good for landing, but something you need to watch out for on take-off when you leave ground effect (1 wingspan length).
John Breda