As a follower, let me thank you for devoting that time to learning to lead! It will pay off in appreciation from the ladies you dance with!
But I do think you should practice what you are learning with your pro with an amateur, at least once you feel you have a handle on what he's teaching you. Every lady will feel different, and few of them will be as well-balanced and responsive as your pro (unless he is "playing hard to lead" to tach you how to cope with les than perfect followers). A good leader needs to be able to adjust to each follower (just as followers need to adjust to each leader).
It will be hard to find a female pro who knows the nuances of leading as well as a man who has been doing it all the time for years and years. However, the best lead at my studio is a female pro who has been dancing, competing, and teaching for 20 years. So if you're looking for a female pro, look for oen who has been teaching for a long time.
Ask the female dancers you know who is the best female pro leader they know (most of us have had occasion in lessons or classes to be led by female pros).