I actually went with this kit which is similar to the cognito kit that you are looking at, 210-P0879. When I purchased my truck it felt very under dampened when I would hit bumps/dips at 60+ on the highway. I was originally going to go with the bilstein 5100 set up but I didn't want something overly stiff just for highway driving. I have some back issues that have plagued me at a younger age and I need a vehicle that will take bumps smoothly. The stock suspension did that however it was under dampened at speeds. I knew Fox was more of a premier brand in terms of suspension and I've always wanted to try a set of their shocks and overall I am very pleased at my purchase. I don't think you could go wrong with Elka suspension however I personally haven't heard much about them. When I did mine I also installed the longer trail boss axles as well as the longer sway bar links for the at4x to prevent the axle from hitting the sway bar. I used the stock trail boss wheels and added 295/70/18 Nitto Recon's to keep the weight down and currently run 1.25 inch spacers until I decide on a different wheel. As far as I am aware I don't think you can run a stock wheel with the larger cognito control arm.