You should be OK, I assume you are replacing front and rear. I did this long ago and the only "problem" I had was the steering wheel was off center, I simply set the front wheels straight and disconnected the steering shaft at the fire wall and centered the steering wheel.
As for the shocks, I would replace them if you want to gain any travel from your new lift, I ran a set of used Rancho 5000s up front and some Monroe's out back. Hope this helps.
Norcal