Yes, DB Hammer would suggest that you use a MAG/DUR training split. Basically meaning heavy work one day, and explosive work another.
Also, and I don’t mean to be rude, but the difference between your CMJ and rebound jumps probably won’t say much seeing as your CMJ is only around 20 inches. What do you squat, by the way, and at what height and BW?
Stevemac24 - your CMJ in my opinion looks pretty good if you consider the resident men lifters at Colorado Springs in USA average 48.2cm (they also squat 249.1kg, snatch 145.4kg & C&J 180.0kg, BW 109.3kg). Also, having worked with professional rugby players they ranged from 30-60cm in CMJ scores, with only good backs and back rowers jumping over 50cm.
Carlock, J. M., S. L. Smith, et al. (2004). “The relationship between vertical jump power estimates and weightlifting ability: A field-test approach.” Journal Of Strength And Conditioning Research 18(3): 534-539.