If it was me I would get the ARB valved Bilsteins.
The valving for the extra weight probably only comes into play on the harder, more compressed hits of the springs. My guess is you wouldn't notice much difference on the road, and they would just be stiffer when offroading.
More than likely you're going to add more weight to your truck in the future with either the ARB and/or skids.
Especially with your trucks attraction to tree stumps.
