baldilocks, There are as many ways to build a 4x4 as there are different types of 4x4 out there to build. I have to agree with eimkeith your driveline extension & coil misalignment is a moot point. As far as moving the axle foreword whether .5", .75" or or 1" is to get tire centered in the wheel well, ( coil alignment is a bonus) or if large tire are being used 37s or larger to move the tire away from the fire wall (You point this out in your build thread) and why I moved my axle forward 1" to fit the 39s.
As far as making large tire fit, 37 or larger there basically two school of thought, Old school big lift , big bump stops extensions to keep the tires out of the sheet metal & a high center of gravity or low lift and cut the sheet metal tell the tires clears modern day low center of gravity.
Now I need to get a another cup of coffee.
Looking forward to the Dusy Steve!!!
PS I have a lot more cutting and welding to do