Shocks that are categorized by lift aren't always accurate. Since I believe the legendary Tamor RTI ramp is still around, put the lift on, measure your mount to mount shock lengths with no shocks installed and order ones that will optimize your suspension's range. You can temporarily put the stock ones back on for street driving until your new **** gets here.
I also agree the sliders should be a priority. My personal experience based opinion is that the following make the biggest difference in wheeling capability in order;
1. Traction (lockers)
2. Tires
3. Steering
4. Sliders
Seriously, when you aren't worried about crushing rockers and can deliberately pivot off rocks and trees your wheeling capability skyrockets.