Ok I've studied pictures of Hydra: The Revenge's jojo roll for about an hour and tried to heartline the roll better. I managed to get the G's down in the heartline roll to these specs:
Max Positive G's = 3.3
Max Negative G's = -0.3
Max Left Lat = -0.4
Max Right Lat = 1.4
Pictures are below. Please give me any tips that you may have: