[Socko]

No matter what rims you use you will have to notch the frame somehow, either a bolt in under the bed notch. Or a step/monster notch in order to layout with any wheel. You should notch it when you do the bags getting the size of notch that will work with the 22s, for 22s you will also need to tub the wheel wells in the bed and for 20s in the front, on an OBS you have to remove the inner fender wells, I dont think you have to on the NBS (i could be wrong). Use 2" drop spindles, this way you can layout and it wont mess up a lot of the geometry. Some people run arms from Air Ride. it helps to correct the alignment/etc and is a cleaner setup.

The starting point of bags does not matter, many go from a 4/6 drop or whatever because thats what they had. You can bag it from bone stock the day you buy it. You will not layout on your stock rims because the tires are too tall, 30" stock tires are equal to a 22" rim/tires.