Thanks for all the input. Since I already have the V6 diffs and the 4.7's, I think I'm going to go with Longs since I keep hearing the stock birfs will definitely break.
I'm trying to keep lift to a minimum so maybe I'll get lucky with driveline angles. The rear won't be that big a deal to rotate if I have to. The front is what I'm worried about. More for caster than anything. I don't want squirrley handling at highway speeds.