I've updated to 2.0 which adds the stamina points. It seems simple to me. You have the stamina points on the table and each exploit as an SP cost. The only thing you have to remember is that despite you SP total you can only ever execute one exploit of each level above 5th.Heh, if only, the 5e spell point system didnt hurt the eyes!
I think you should use the official Wizard spell point system, because official and Wizard.
But hopefully, the spell point system gets an update in the future that makes spell points more user friendly and more convenient on the fly with less chart consulting calculations.
When the update happens, the Warrior stamina points can update too.