If you already had X3 Producer? You will only need to install Sonar Platinum (the core program) and Anderton's FX Chains. Just click on Sonar Platinum and when it opens its contents. Click on Sonar Platinum and select "Install," then click on Anderton's FX chains and select "Install."
With the Addictive Drums Producer Bundle? You get 3 kits, 3 midi packs and 3 kit pieces.
If you already have all the kits? I would contact their support and see what they are willing to swap for, ie. midi packs, addictive keys or you might even be able to wrangle, Peavey Revalver 4, out of them?... But that is a "maybe?"