Sweet ride, Man!
So "acceptable range" on the alignment??? What exactly? Or put another way, how far out on your caster are you?
I've read of people having the alignment techs max out the caster and then dial in the toe and camber, but don't know how well that really describes the correct process for getting the caster as close to spec as poss. Seems that it all depends on how good the tech is who does the job.
I'm gonna do something really similar. I've pretty much decided to go with the 1.75 setting on my 5100's, and I'm pretty set on going w/ 265/70/17, probably with Firestone Destination A/T's I had those on my f150 when I sold it and I really liked them, my shop had a special on them too at the time. I've also got my FJ springs and 1.5 daystar spacer for the rears. I went ahead and ordered new top mounting hardware so I can have the front coils pre-assembled before I install. I'll be all by my lonesome when I do it.
Your CV angles are good you report... how about any leaks from the boots? I notice its a mixed bag with CVs and boots. Some get leaks and problems, some not. Always hard to tell how many other issues are/were present b/4 the lifts and subsequent problems which could be contributing (like, maybe leaks were getting ready to develop anyway, then a lift gets installed and gets blamed for the leak...).
Anyway, nice ride! I'd be interested to hear how things hold up as you get more miles on the setup...
Take care.
Bob