I had the exact same shocks on my previous ride (Toyota Tundra). Bilstiein makes a quality product as the shocks looked like they would last a lifetime. I had mine for 30k miles before I traded it in and they were still cherry.
I can tell you right now your ride will be stiffer. It won't absorb bumps at slower speeds as well, but traveling on a little rougher terrain will be smoother than stock shocks. Performance minded shocks work best when being exercised like they were designed (off road, daily driving, high speed maneuvering, etc.).