I fail to recognize the correct usage for this Havoc...

What I do understand (or think I understand) would go something like this.

(weeks 1-3) Pre-load –Hawthorn, Milk Thistle, Fuze (scivation)
(weeks 3-6) Havoc along with continued Hawthorn & Milk Thistle

Am I way off here?? - And what is a recommended PCT?