For the most part its pretty simple. I can't believe that I paid 1200 $ for the lift kit before. The only thing hard about mine is I'm dropping the upper coil spring mount 2" for more lift. Just lining up the holes might be tricky
If you use drop brackets that are same size as the lift you shouldn't need degreed bushings if you're attempting to keep castor the same. Take the length of the radius arms, the size of the lift, and subtract from drop brackets. Draw a triangle, do some geometry and there you go.