I have 2" shackles and 2" Pro Comp Springs (4" total) with Pro Comp ES3000 shocks. Props seem fine, you can see they have moved back, but there seems loads of room left and it has been pushed to the limits. Still got standard brake lines but will put new ones on as they do go a little tights at full articulation.
Rear end sits lower than the front after a couple of off road sessions so may look at a better quailty set of springs for the back end, maybe a set that will give 3" of lift.
Still Spring Under at the moment. If I keep the Zook I'll look at Spring Over or coils.