Well I sort of did the first stage... I was able to get the airbags out, which was easier than I thought. I cut the air lines so I committed early, lol. That in mind the bags turned out being ok and had a good amount of air in them. I was able to get the ironman performance springs in with the metal tech airbag delete kits. I removed the rear anti-roll bar and found it was easiest to get the springs in by pre-assembling the metal tech airbag delete then bolting it up to the axle. I couldn't find any torque specs so I just did as tight as possible without stripping. I tried to take the shocks off, but they were really stuck in there. I tried an oscillating saw but the blades went flat in seconds against those hardened bolts. I'm going to buy a torch and hope that works. That in mind, the front bolts are stuck too, so I think I can knock out the fronts, UCAs and read shocks in one 3-4 hour session. I'm a little nervous about torching the front bolts as they're so close to some of rubber in the engine bay when I last looked at it.
As for having the rear only lifted, well the headlights point fairly far down, but not too bad. The RedBull F1 style rake is kinda cool, lol. It rides way better with the ironman springs in the back compared to the airbags and should only get better when the fronts are done.