Not grading, just letting you know, the stacking part is a no-can-do.
From the 'official rules' themselves:
"Transformations cannot combine. In other words…if one transformed to beast mode and wanted to go super Saiyan, beast mode is canceled. You can’t have both. This includes other power-ups, such as Kaoi-Ken or similar. Only one type of power-up at a time. Period.