I've installed the same kit on my truck and the install was super eazy.. All you need is a jack some jack stands and a set of wrenches.. The part that totally sucked was gettin the alignment done.. I actually had to have a buddy,(RegCabX) move my A-arms up about 1 inch to fix the negative camber that this kit causes.. The rear is pretty straight forward but cutting the U-bolts was a pain in the butt. I recommend cutting the U-bolts 2 inches longer than the stock ones before installing them and be carefull not to cross thread.. And definately take your bump stops off completely..
As far as negative camber goes, each vehicle is different. There is no way to tell on your truck until you install the kit.
With the bump stops, I do not recommend removing them completely. I recommend cutting them down shorter, but do not remove them. They are there for a reason. If you hit a bad bump on the highway, you want that bump stop there.
With the U Bolts - I suggest either doing the install THEN cutting the excess off, OR - make sure you thread a nut on to the U Bolt before you cut them shorter - You may damage the threads when you cut. If the nut is on there already, when you take it back off after cutting, you will fix whatever threads you damaged.