Agree its worth putting a couple hundred miles on the new springs. They will "settle" a little. I double checked the FSM and as several have posted, the spring bolts should be torqued with the weight of the vehicle on the springs.

I am runing the MOPAR XHD's. By design they are kinda low plus they seem like they drop more (sag) over time. Unless they have been improved, better to work with the ones you have. After some breakin if they are too high, consider taking them to a spring shop to get de-arched a little.