I just installed the crown spindles as well yesterday! I have bilstein 5100s on all 4 corners. My front has ~6" lift and I have a 1" block in rear. I need to go a little higher in rear, but am limited to 1" right now with the 5100s.
It's a fairly easy install for the spindles. My hubs gave me a little trouble, had I known, I would've bought new ones to throw in while it was all apart down there. Also make sure you have replacement bolts, before starting, for the hubs. They need to be extended for the 2 bottom ones on each side. M14 1.50x70mm is the size I believe. So 4 of those total. Brake lines were hard at first, but we learned the trick was to leave the little clip in on the bracket while 'breaking' the bolt. Makes it much easier. Easiest thing to do with alignment, if you aren't savvy, is to take it to firestone and pick up a lifetime alignment. I get my truck aligned with every other oil change.