Serpent,
The forms and the partner trainings/sparring will let you know what kind of dexterity each side of your body needs to develop. That'll come about as you train. If you want to learn Hung-gar, practise Hung-gar. For even development of strength and shape, I suggest weight training; train the two sides separately, so the stronger side doesn't always compensate for the weaker side, and so that you are aware which side is capable of what. That could also aid in increasing range of motion, if you go through the entire range of each movement, and if you use free weights, co-ordination as well.
