@TheBoxingScientist - right now am doing the following:
Khan ST1 x 1
Regeneration x 1
Spartan x 1
This works for me. I am guessing that if you want to lay more emphasis on any of the components in this stack, just increase that. For example, if Khan is more important to me, I would do a stack like:
Khan ST1 x 2 (or 3)
Regeneration x 1
Spartan x 1
Hope this helps